did a plug chop

[Bandit]

I did a plug chop and im confused on what to look at. The top half is brown all the way around and the bottom is white with a vary faint thin brown line around the very base where the threads start.

[Bandit]

I got a couple pictures

 

http://h.1asphost.com/xcbandit/Picture%20037.jpg

http://h.1asphost.com/xcbandit/Picture%20035.jpg

 

It flutters a little at WOT other then that runs great. Not for sure if i should go up or down a main.

This is a lt50 with a port job and Ct racing kit. running on 110 octane fuel mixed 40:1

[Bandit]

I just went and tried a 85 jet and a 90 jet and runs the same...at WOT it stutters and if you back off the throttle a little it comes out of it and will start picking up rpm's.

[dajogejr]

Plug chop is a plug chop...but, it has racing fuel, what mods are done to the compression or timing to warrant it??