Re: Richen

Richen up and die if standard tuning advice is followed.... not good.

Better to adjust it at 1/2 a tank level then perform the sustained nose up and then the nose down tests as I've outlined, particularly with the Evolution engines that have other problems associated with their limiters, etc.

Re: Lean out

That is why you want to tune the engine with 1/2 tank or less.

Shoot to eliminate problems in the worst case and the rest tends to follow.