I have five tanks of 15 % Heli fuel through through this engine I just bought 3 weeks ago..

When do I adjust the valves/?? engine works flawlessly now ...

I know they need to be T D C on compression stroke. so do I do one valve at comp TDC and then rotate twice more then do next valve at comp stroke TDC . and >003 thous.. i might add ?????

Or do I do both valves at the same time after bringing it to TDc on the compression stroke.

Thanx in advance....Popcan...