Weird issue with Tekin RS
 

Got I a weird problem with the esc. Seems like the sensor mode dies out after couple squeezes of the throttle. It comes back when I power cycle it. The another squeezes after, it runs as if the sensor wire came out. I tried the following:
1. switched sensor wire = same
2. switched power cap = same

I have a brand new murfdogg 17.5 (new one) and the power cap from them.

Hate to think I got a dud from Murfdogg, but I had a similar issue with a tekin motor, but that was just a bad sensor board. The boost never came back no matter what on that one, but this issue does after a power cycle. Could my RS be getting bad?

thanks