diff --git a/src/graphics/Screen.cpp b/src/graphics/Screen.cpp
index 53405e757..601b83f9c 100644
--- a/src/graphics/Screen.cpp
+++ b/src/graphics/Screen.cpp
@@ -97,7 +97,7 @@ static uint16_t displayWidth, displayHeight;
 #define SCREEN_WIDTH displayWidth
 #define SCREEN_HEIGHT displayHeight
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER)
+#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS)
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16
 #define FONT_MEDIUM ArialMT_Plain_24
diff --git a/src/main.cpp b/src/main.cpp
index 95da04014..c3f892bce 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -233,6 +233,8 @@ void setup()
     delay(1);
 #endif
 
+    // We need to scan here to decide if we have a screen for nodeDB.init()
+    scanI2Cdevice();
 #ifdef RAK4630
     // scanEInkDevice();
 #endif
@@ -273,10 +275,12 @@ void setup()
     power->setup(); // Must be after status handler is installed, so that handler gets notified of the initial configuration
 
     /*
-    * Move the scanning I2C device to the back of power initialization. 
-    * Some boards need to be powered on to correctly scan to the device address, such as t-beam-s3-core
+    * Repeat the scanning for I2C devices after power initialization. 
+    * Boards with an PMU need to be powered on to correctly scan to the device address, such as t-beam-s3-core
     */
-    scanI2Cdevice();
+    if ((HW_VENDOR == HardwareModel_LILYGO_TBEAM_S3_CORE) || (HW_VENDOR == HardwareModel_TBEAM)) {
+        scanI2Cdevice();
+    }
     
     // Init our SPI controller (must be before screen and lora)
     initSPI();
diff --git a/src/mesh/NodeDB.cpp b/src/mesh/NodeDB.cpp
index fca3af305..92115d127 100644
--- a/src/mesh/NodeDB.cpp
+++ b/src/mesh/NodeDB.cpp
@@ -699,11 +699,23 @@ NodeInfo *NodeDB::getOrCreateNode(NodeNum n)
 
     if (!info) {
         if (*numNodes >= MAX_NUM_NODES) {
-            screen->print("error: node_db full!\n");
-            DEBUG_MSG("ERROR! could not create new node, node_db is full! (%d nodes)", *numNodes);
-            return NULL;
+            screen->print("warning: node_db full! erasing oldest entry\n");
+            // look for oldest node and erase it
+            uint32_t oldest = UINT32_MAX;
+            int oldestIndex = -1;
+            for (int i = 0; i < *numNodes; i++) {
+                if (nodes[i].last_heard < oldest) {
+                    oldest = nodes[i].last_heard;
+                    oldestIndex = i;
+                }
+            }
+            // Shove the remaining nodes down the chain
+            for (int i = oldestIndex; i < *numNodes - 1; i++) {
+                nodes[i] = nodes[i + 1];
+            }
+            (*numNodes)--;
         }
-        // add the node
+        // add the node at the end
         info = &nodes[(*numNodes)++];
 
         // everything is missing except the nodenum
diff --git a/src/modules/CannedMessageModule.cpp b/src/modules/CannedMessageModule.cpp
index 54804859b..a21b63779 100644
--- a/src/modules/CannedMessageModule.cpp
+++ b/src/modules/CannedMessageModule.cpp
@@ -11,7 +11,7 @@
 #include "graphics/fonts/OLEDDisplayFontsRU.h"
 #endif
 
-#if defined(USE_EINK) || defined(ILI9341_DRIVER)
+#if defined(USE_EINK) || defined(ILI9341_DRIVER) || defined(ST7735_CS)
 // The screen is bigger so use bigger fonts
 #define FONT_SMALL ArialMT_Plain_16
 #define FONT_MEDIUM ArialMT_Plain_24
diff --git a/src/platform/portduino/SimRadio.cpp b/src/platform/portduino/SimRadio.cpp
index ccfaa3b03..b3af114e5 100644
--- a/src/platform/portduino/SimRadio.cpp
+++ b/src/platform/portduino/SimRadio.cpp
@@ -171,6 +171,8 @@ void SimRadio::onNotify(uint32_t notification)
                     // Packet has been sent, count it toward our TX airtime utilization.
                     uint32_t xmitMsec = getPacketTime(txp);
                     airTime->logAirtime(TX_LOG, xmitMsec);
+
+                    delay(xmitMsec); // Model the time it is busy sending
                     completeSending();
                 }
             }
@@ -207,6 +209,9 @@ void SimRadio::startSend(MeshPacket * txp)
 
 void SimRadio::startReceive(MeshPacket *p) {
     isReceiving = true;
+    size_t length = getPacketLength(p);
+    uint32_t xmitMsec = getPacketTime(length);
+    delay(xmitMsec); // Model the time it is busy receiving
     handleReceiveInterrupt(p);
 }