Well, the only reason a set of limbs could be reseating is if the bolts are wound out too far. This is dangerous!
How do you know it is the limbs making the noise?
Raising the BH helps a whippy arrow pass the bow, it also slows down the limbs and more twists makes a spongier string too.
From playing around myself and helping several others experiencing loud crack noises on loose it has come down to arrow spine every time. Your situation may very well be different, of course, but that would be my bet; wrong spine causing nock slap. Fletching damage seems to be rare in these situations too, which I have no explanation for.
Arrows were, if anything a bit on the stiff side.
Limb bolts were out a long way to try and keep the limbs close to their alleged rating - they were still over by about 2lb so maybe the bolts could have done with coming out further - they did not look dangerously far out especially when compared to one of the other club members bow setup.
They had the same poundage as the previous limbs that didn't make any noise. Matter of fact, the only change in the set up was the limbs.
Raising the bracing height by around an inch quietened them down.
Doesn't matter to me now as I've swapped to a set of Border's with much lower bracing height and limb bolts in roughly the same place, barring tiller adjustment, with no such noise. I came to the conclusion that there was just something peculiar with that setup and that the limbs didn't like a low bracing height with the limb bolts wound out to keep at the lower range of the limbs.
Plus one of the club members (a lot more experienced than me and definitely shooting correctly spined arrows) said that they found they needed a high bracing height too. So it all seemed to tie in.
Anyway, I only had the limbs for a couple of weeks so didn't spend too much time on it.