Always?
I understand.
A video would be nice. I’m not sure how helpful it would be, but worth a try.
To be honest, I have no idea what happens. The bad news is that I currently have no access to my desktop computer and limited access to the Internet (make-over at my apartment), so that might make tracking it down a little more difficult.
Please try commenting out the moving platform code in kcc.py to eliminate one possible cause.
I do what I can 
.