Henep,

hey, i have 2 of the FT1.60's and both are identical. serial numbers are 19 numbers apart. both have great compression, but they need to be flip briskly to feel the compression whereas my OS 91's have hard compression even when pulled through lazily.

i've only run one of my 1.60's so far, and broke it in by running it rich and bringing it up to peak for a second or two, then back to rich for 20-30 seconds and then back to peak and so on and so on for about 5-6 minutes, then i let it cool down completely before running again. the engine has great compression, but no more than when i started.

the 91's however became tighter as they broke in.

try fliiping the prop through and see how it feels to you. pulling through slowly will not give much resistence as you say.