Yamaha DTXpress/DTXplorer/DTXtreme

Hello everyone.  I am currently using the TP65S.  I notice that when I 
hit the snare sometimes that snrR1 or snrR2 is triggered.  However, I 
can bend the rubber out on the edges a litte bit on the left side and 
it stops.  It stays good until the next time I power on.  It is a very 
strange issue.  I have looked inside and everything seems correct as I 
have seen in pictures.  Any ideas?

Thanks

Steve