diff --git a/Modem/config.h b/Modem/config.h
index d032a76..343466f 100644
--- a/Modem/config.h
+++ b/Modem/config.h
@@ -11,7 +11,7 @@
 #define CONFIG_AFSK_RXTIMEOUT 0				// How long a read operation from the modem
 											// will wait for data before timing out.
 
-#define CONFIG_AFSK_PREAMBLE_LEN 350UL		// The length of the packet preamble in milliseconds
-#define CONFIG_AFSK_TRAILER_LEN 100UL		// The length of the packet tail in milliseconds
+#define CONFIG_AFSK_PREAMBLE_LEN 10UL		// The length of the packet preamble in milliseconds
+#define CONFIG_AFSK_TRAILER_LEN 2UL		// The length of the packet tail in milliseconds
 
 #endif
\ No newline at end of file
diff --git a/buildrev.h b/buildrev.h
index fb6a824..7025c3c 100644
--- a/buildrev.h
+++ b/buildrev.h
@@ -1,2 +1,2 @@
-#define VERS_BUILD 830
+#define VERS_BUILD 835
 #define VERS_HOST  "vixen"