well my rc10gt has me stumped! i can get my gt starter up fairly easily but when i get it starter it acts really weird. like it acts really lean and then it dies. so i put it back at factory settings and it still does the same thing. i put new fuel lines on to make sure i wasn't having a leak any where and that did nothing. i tightend my cooling head screws to make sure there wasn't an air leak there and that did nothing. my glow plug is good and my air filter is clean. any suggestions...i'm stumped?

What fuel you using?

does it only do this when at idle? or through low-high speeds? if it only does it at idle try adjusting your idle a little bit at a time. if it does it throughout high-low speeds again just kinda of make minor adjustments to the needles as needed. it sounds as if your running either all needles a little bit bit off or one needle way off.(even factory settings can be way off if your engine has some wear to it becuase the compression changes and im assuming temp does also)
if all else fails take a trip to the hobby shop or call em up and see what they say.

hope i helped[:@][:@]

heck your fuel filter it may be clogged up