Originally Posted by dido41

I have been trying to tune my GO-7+2 mod with no luck. It has a 3 needle carb. My problem is that when cold it is hard to start, so I have to lean it out to get it to Stay running.
After it warms up, I have to richen it back up to gain power. Once warm And I re-fuel it, it runs way rich with no power and as the tank runs half empty it starts running full power. Then as the tank gets empty I start to loose power again.
I can not keep it in tune. I seem to fight it the whole tank of fuel. It’s been like this from new. I have about ¾ gal of 25% thru it now and still fighting this problem.

The lsn I have way out almost too where the seal is showing or it idles way to lean. The hsn is almost flush; I never touched the midd range needle. This is getting very discouraging to try and race when the motor will not tune.