Pulse Solution Front Spring

[Bryan66]

I am running a Pulse Solution. I love the way it puts color in and shades...You can barely hear it running. I run it as it came which is about 1/8" air gap or stroke length, 45% duty cycle, and around 8.5 to 9 volts....My thing is, is that sometimes, not all the time, but sometimes the contact screw wants to stick to the front spring causing it to pit and build up. I have to file it back down smooth....I guess my question would be, Is the voltage causing this by being too low or high? Any comments on this will be appreciated...

Thanks
**Bryan**