Oil consumption could be the valve guides - BTDT, and silicone seals cured it.
Plus, oil has low octane, and in diluting the fuel mixture, reduces the fuel's octane.
I ran a compression ck maybe 18 months ago I think. All were over 200psi , Ran cyl leak down ck as well. None were over 15% loss . These numbers are best case memory off the top of my head ( my memory aint what it used to be )
I may pull it apart in the next month or so to do some paint touchups and run thru the valves . So might pull the carbs and run a bore scope in the intake for a look see
