diff --git a/serialstep/serialstep-DRV8428P/README.md b/serialstep/serialstep-DRV8428P/README.md
index c25902768451cf9d83fc82a3234090cfd7259564..3c776c6819f129e0dda5beeeb9b6202b96ce7517 100644
--- a/serialstep/serialstep-DRV8428P/README.md
+++ b/serialstep/serialstep-DRV8428P/README.md
@@ -37,7 +37,8 @@ Set up with pivot/mirror 3378mm distant from ruler.  Beam translation 212 mm cor
 
 <img src="img/steps.svg" width="50%">
 
-Below are results from driving a small stepper with 6.7 Ohm resistance.  Vref is set at 2.0V.  Red moving one direction, blue returning.  No load.  Looks good.  But when vref is set to 1.0, the result looks like the figure above.  
+Below are results from driving a small stepper with 6.7 Ohm resistance.  Vref is set at 2.0V.  Red moving one direction, blue returning.  No load.  Looks good.  But when vref is set to 1.0, the behavior is as before -  uneven stepping, with a big pause at 5-10 steps.
+  
 
 <img src="img/step_mar09.svg" width="50%">
 T