The crank press fit at 0.115mm is getting tight for a pin with a big hole thru it.
Reason , the pin will cone downward as it approaches the crank wheels , due to the softer material of the interior , plus the big hole - if you use much more press fit than that.
Best solution is to assemble it , true it , then press in small plugs on each side with the same press fit , un assembled.
This helps to tighten up the press fit grip , and stops the pin ends from crushing inwards and causing the rollers to skid over the curved ( ie not flat ) surface.
Saw this first on old KT100 Yamaha kart engines.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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