Main bearings have different internal tolerances so you need to be careful you’re fitting like for like. I think C1-5 - I always try and use OEM for mains, unless they’re coming from someone that really knows their stuff.
Sometimes it is worth confirming that the correct bearings (clearances) have been fitted in the past.
The experience I have had with 2 strokes was in Italy, even my rgv and rs250 bits came from Italy.
@lynx started
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Main bearings have different internal tolerances so you need to be careful you’re fitting like for like. I think C1-5 - I always try and use OEM for mains, unless they’re coming from someone that really knows their stuff.