I’ve had a couple dozen MIM J basses over the last few years and never had one crack like that and I never worried about acclimating them when they arrived, or when I was playing outside in cold weather. The lowest I exposed one to outside a case or my van was 18F.
That said, it takes less than an hour to strip the poly off an MIM body, another half hour to an hour to smooth the sealer, wipe it with alcohol, then run a tack cloth over it, and it’s ready to repaint.
if you are happy with the way it plays, keep it and play it until you can no longer tolerate the looks, then refinish it or sell it on.
If OTOH the cracks are a deal breaker, inform the seller they need to open a damage claim with their shipper and figure out a return that works for both of you.
That said, it takes less than an hour to strip the poly off an MIM body, another half hour to an hour to smooth the sealer, wipe it with alcohol, then run a tack cloth over it, and it’s ready to repaint.
if you are happy with the way it plays, keep it and play it until you can no longer tolerate the looks, then refinish it or sell it on.
If OTOH the cracks are a deal breaker, inform the seller they need to open a damage claim with their shipper and figure out a return that works for both of you.
