I do see your point, but here's the info I've had in the past about my bikes;

Castrol '28, nothing known, presumably original Honda, 1993, probably around 4000 road miles, raced for 2 seasons and around 20 trackdays.

Rothman's '28, nothing known, presumably original Honda, engine came off Ebay taken from a '21, so 1992 at the latest, a few thousand road miles, three or four track days.

Race '18, allegedly a new crank 2 years ago, but then again allegedly a decent race motor setup for avgas, reality was 2mm squish and still restricted. 3/4 of a seasons racing and 4 trackdays.

Road/race '21, motor allegedly built by Apex, that's 3rd hand info though and it certainly wasn't set up by them. Thousand+ road miles, couple of trackdays and a days racing.

So presumably that's 4 bottom ends you'd have ripped apart? As it is I've just run them and they've been fine.
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