Can someone tell me where to set the needle valve on a red head McCoy 35 probably from the 50's or 60's? I just inhereted this beauty but it won't run long enough to get started and adjust at 3 and a half to 4 and a half turns.  I'm using powermaster 29% fuel.

         Ronald, I purchased the Powermaster .29% for the same purpose as you just mentioned, for my older style engines. These engines like around 10% nitro which is what I bought. I will say it worked but not as expected. I had all Fox plugs in my redheads and older  K&B engines. I think that was my problem. The plug was virtually drowning in the oil as it would start fine then when I would go inverted the engine would quit. This also happened when I used this fuel in my OS Max-S. I switched to a hotter Thunderbolt plug and this was resolved. Just keep a fairly rich setting on the ground and pick the nose up until it breaks and that should be fine. I wouldn't let that engine turn up too much as an overlean run will more than likely do damage to that engine. They do work and run well. I have some that I wouldn't part with as they're very reliable. Make sure the spraybar is clear as they're brass and they will get clogged with the green goo. a straight pin through it and a good fuel flush takes care of that. A 10x6 prop is a good choice for the .35 as well.  Ken

I second what Ken said. They do need a hot plug or they just quit. I run 5 McCoy 35's, and they all run very well on an APC 10-6 prop, and Thunderbolt R/C long plugs. Should run well on K&B R/C long, Sig R/C long, Glo-devil 300's, and most other hot plugs. Also, check you backplate screws for tightness. If the backplate leaks, they don't run well.