Resettable overload (fuse) and marring workpieces

[Downunder Bob]

I agree, given that electronics are involved, and the problem only happens when you stall the lathe, I would say stay with the recommended fuse. However you could include a resettable breaker of 4A and then upgrade the fuse to say 5A as a backup. That way the breaker should take care of the nuisance conditions and the fuse will protect you in case of a serious fault developing. I have done exactly this on a number of occasions, with good success.