Hey Kris,
Good reply, I used to do quite a bit of small engine repair on the side ,and your correct about the tighter tolerances etc,etc but
only on the" real as designed for aircraft use" motors. My comment I guess was aimed at the "conversion " stuff.

My error, good catch.

BTW...........this may sound a little silly,but what the hell.

I do "run in" ALL of my internal combustion engines prior to
using them, this must be a carry over habit from my Fox CL
days in the 50's and 60's

My best regards
Roby