diff --git a/commons.h b/commons.h
index 405a2c6..f7900e6 100644
--- a/commons.h
+++ b/commons.h
@@ -14,7 +14,7 @@
 #define JS8_ALLOW_EXTENDED 1       // allow extended latin-1 capital charset
 
 #ifdef QT_DEBUG
-#define JS8_DEBUG_DECODE   1       // emit debug statements for the decode pipeline
+#define JS8_DEBUG_DECODE   0       // emit debug statements for the decode pipeline
 #else
 #define JS8_DEBUG_DECODE   0
 #endif
@@ -38,7 +38,7 @@
 #define JS8C_TX_SECONDS     6
 #define JS8C_START_DELAY_MS 100
 
-#define JS8E_SYMBOL_SAMPLES 4000
+#define JS8E_SYMBOL_SAMPLES 3840
 #define JS8E_TX_SECONDS     30
 #define JS8E_START_DELAY_MS 500
 
diff --git a/lib/js8/js8dec.f90 b/lib/js8/js8dec.f90
index f216a67..510216e 100644
--- a/lib/js8/js8dec.f90
+++ b/lib/js8/js8dec.f90
@@ -466,6 +466,12 @@ subroutine js8dec(dd0,newdat,nQSOProgress,nfqso,nftx,ndepth,lapon,lapcqonly,   &
            ios=mod(itone(i)+4,7)
            xnoi=xnoi+s2(ios,i)**2
         enddo
+
+        if(NWRITELOG.eq.1) then
+            write(*,*) '<DecodeDebug> snr', xnoi, xsig, xbase, db(xsig/xbase), db(xsig/xbase - 1.0)
+            flush(6)
+        endif
+
         xsnr=0.001
         if(xnoi.gt.0 .and. xnoi.lt.xsig) xsnr=xsig/xnoi-1.0
         xsnr=10.0*log10(xsnr)-27.0
diff --git a/lib/js8/js8e_params.f90 b/lib/js8/js8e_params.f90
index 63e639e..393b557 100644
--- a/lib/js8/js8e_params.f90
+++ b/lib/js8/js8e_params.f90
@@ -17,8 +17,8 @@
 ! parameter (NSPS=960,  NTXDUR=8,  NDOWNSPS=24, NDD=100, JZ=116) ! 100 Hz  12.50 baud 32 wpm -22.0dB (1.0Eb/N0)  5.92s
 ! parameter (NSPS=1200, NTXDUR=10, NDOWNSPS=20, NDD=100, JZ=116) !  80 Hz     10 baud 24 wpm -23.0dB (1.0Eb/N0)  7.90s
 ! parameter (NSPS=1920, NTXDUR=15, NDOWNSPS=32, NDD=100, JZ=116) !  50 Hz  6.250 baud 16 wpm -25.0dB (1.0Eb/N0) 12.64s
-! parameter (NSPS=3840, NTXDUR=30, NDOWNSPS=32, NDD=94,  JZ=116) !  24 Hz  3.125 baud  8 wpm -28.0dB (1.0Eb/N0) 25.28s
-  parameter (NSPS=4000, NTXDUR=28, NDOWNSPS=20, NDD=90,  JZ=32)  !  24 Hz      3 baud  8 wpm -28.2dB (1.0Eb/N0) 26.33s
+  parameter (NSPS=3840, NTXDUR=28, NDOWNSPS=32, NDD=90,  JZ=32)  !  25 Hz  3.125 baud  8 wpm -28.0dB (1.0Eb/N0) 25.28s
+! parameter (NSPS=4000, NTXDUR=28, NDOWNSPS=40, NDD=90,  JZ=32)  !  24 Hz      3 baud  8 wpm -28.2dB (1.0Eb/N0) 26.33s
 
 parameter (AZ=12000.0/(1.0*NSPS)*0.8d0) !Dedupe overlap in Hz
 parameter (ASTART=0.5)                   !Start delay in seconds
diff --git a/mainwindow.ui b/mainwindow.ui
index 31208ab..98a400e 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -5769,7 +5769,7 @@ list. The list can be maintained in Settings (F2).</string>
     <bool>true</bool>
    </property>
    <property name="text">
-    <string>JS8 (&amp;Slow, 30s, 24Hz, ~8 WPM)</string>
+    <string>JS8 (&amp;Slow, 30s, 25Hz, ~8 WPM)</string>
    </property>
   </action>
  </widget>