diff --git a/src/dsd_symbol.c b/src/dsd_symbol.c
index 4e24085..c032b46 100644
--- a/src/dsd_symbol.c
+++ b/src/dsd_symbol.c
@@ -499,24 +499,25 @@ getSymbol (dsd_opts * opts, dsd_state * state, int have_sync)
           if (state->rf_mod == 0)
             {
               // 0: C4FM modulation
-              if ((opts->frame_p25p1 == 1) && (i >= state->symbolCenter - 2) && (i <= state->symbolCenter + 2))
-              {
-                sum += sample;
-                count++;
-              }
-              //testing dmr may be slightly off compared to P25, particularly wav recording at narrower bandwidth?
-              else if ((opts->frame_dmr == 1) && (i >= state->symbolCenter - 1) && (i <= state->symbolCenter + 2))
-              {
-                sum += sample;
-                count++;
-              }
-              //anything else
-              else if ((i >= state->symbolCenter - 2) && (i <= state->symbolCenter + 2))
+ 
+              //EXPERIMENTAL: manipulate the left edge depending on sync type
+              //TODO: See if we can manipulate this a bit more based on AFC or similar type function
+              int l_edge = 2;
+              int r_edge = 2;
+
+              if (state->synctype == 30 || state->synctype == 31) l_edge = 1; //YSF (need to test with new recordings at BW:12000)
+              else if ((state->lastsynctype >= 10 && state->lastsynctype <= 13) || state->lastsynctype == 32 || state->lastsynctype == 33) l_edge = 1;
+              else l_edge = 2; //P25 and NXDN96 perform better, DMR doesn't seem to care too much, but may favor 1 and not 2
+
+              if ((i >= state->symbolCenter - l_edge) && (i <= state->symbolCenter + r_edge))
               {
                 sum += sample;
                 count++;
               }
 
+              //debug: show what was selected for the left edge
+              // fprintf (stderr, "  L:%d", l_edge);
+
 #ifdef TRACE_DSD
               if (i == state->symbolCenter - 1) {
                   state->debug_sample_left_edge = state->debug_sample_index - 1;
diff --git a/src/rtl_sdr_fm.cpp b/src/rtl_sdr_fm.cpp
index 9652d42..e571503 100644
--- a/src/rtl_sdr_fm.cpp
+++ b/src/rtl_sdr_fm.cpp
@@ -1003,7 +1003,7 @@ void open_rtlsdr_stream(dsd_opts *opts)
 	//this needs to be initted first, then we set the parameters
   dongle_init(&dongle);
 	//init with low pass if decoding P25 or EDACS/Provoice
-	if (opts->frame_p25p1 == 1 || opts->frame_provoice == 1)
+	if (opts->frame_p25p1 == 1 || opts->frame_p25p2 == 1 || opts->frame_provoice == 1)
   	demod_init_ro2(&demod);
 	else demod_init(&demod);
   output_init(&output);