No ,in fact ,I never had to replace an engine crankshaft bearing ,those Fast Eddy's are for the 8.0 running gear an
actually won them on this sight from a drawing!..😂👍
Too rich & laggy will cause the trans to not shift ,a leaner tune will create higher rpm's to activate the shifting ,remember ,
the 2 spd clutch hub works off of centrifugal force to engage ,so a laggy engine is not going to do it!..🤷♂️
Also if your engine tune is walking all over the place an...
If the engine is too rich & lagging power ,your trans won't shift ,however ,you should not run your engine so lean
to make the trans shift ,you need to find the balance of the tune an then the shifting point!
So ,find your tune that your engine is happy with ,then find the adjustment screw on...