Odds are, that if your chosen fix is a Fail later: you'd have to drill for oversize anyway, right?

Heh:
Resurrecting an abused Shadow, I found one shaft [in crankcase--for timing gear array]--loose!
Alloy case natch + early '50s Morris-Minor grade 'steel' (they had had a war or something.. just previously).

Made guesstimate of the "new dia." of its hole; had shaft end hard-plated with [prolly Cd?]. Trial and error
to fine-sand that.. just a tad larger than could safely be hammered-in cold.
Vacuum bottle of LN aka liquid Nitrogen from work, cool shaft; heat local area with small torch.
Carefully calibrated hammer blows, seated the kluge snugly.

Worked! (Sometimes ya gets to Use all that special-purpose lore-via-osmosis: to do dirt-simple fixes.
Endorphins!!