Bob_nj,

The OS 46 is turning a Master Airscrew 11/6 with a K&B 1L plug
and the TH 75 is turning a 12/8 with an OS idle bar plug. Sorry I don't recall the number but I'm at work (notice I never said working) and the planes are at home.

I will check fuel caps and clunkers tonight as well. I'm very new to tuning motors so I'm assuming that if the low end needs adjusting it probably is too lean. Am I guessing in the right direction?

Thanks for the ideas. I'll let you know what comes of this,

David