One thing the roller bearing does offer is some axial movement. On race bikes I've been polishing the crank so there is some slip possible from inner to crank so the crank can center and expand without sideways loading the bearing. But we're talking small engines here not 300s so I might leave this tight.
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'07 EC300 GG
'14 TXT250 GG
'? 496 CPI Cheetah RZ/RGV hybrid
'22 765 Street Triple RS
'21 XTrainer
'69 Stinger T125 Suzuki
'23 TRS 250RR (it's a Trials thing)
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