Hey everyone.
I bought a used TT .61 gp. It runs okay. it has the air bleed style carb, and i cannot get to have a good idle and high end. I can get a good high end or a good idle, but not both. it seems as if adjusting the air bleed screw affects both the high end and low end performance. i am using an apc 12 x 6 prop with coolpower 15% nitro fuel. Any ideas? the muffler leaks a little bit of fuel in the middle where the front part attaches to the back part of it.

If i tune it to a good low idle where i can tilt it up 15 degrees and it wont die, once i run it all the way up, it is way too rich. then i have to lean out the air bleed screw some, and it no longer passes the tilt up test. i am all out of ideas.