unwanted nitro cracks appearing

I've sprayed up a guitar with clear,tinted then clear nitro finish a couple of weeks ago. it's the first time I've done this and I managed to achieve a nice flat finish without any runs.I'm waiting for it to cure before polishing, it has a semi matt look at the moment and has not been sanded down.Today to my horror, a noticed it had developed hairline stress cracks around the ferrule holes at the back running along the entire length of the body (although hardly noticible and only at one angle). It looks a bit like an old fender strat which I own, which is covered thin cracks. I'm wondering if I sprayed a light coat of thinners, that the cracks will fuse and disappear but then again would this be a waste of time because they will just reappear as it cures?
It is a bit of a dissappointment as I was hoping for a better result.

I would try Blush Eraser before spraying thinner. When I used it to remove blush on one of my black teles, I noticed that the blush eraser seemed to melt all of the coats of lacquer into a single thick layer. It took 12 hours or so to dry before I could safely touch it.

I would try Blush Eraser before spraying thinner. When I used it to remove blush on one of my black teles, I noticed that the blush eraser seemed to melt all of the coats of lacquer into a single thick layer. It took 12 hours or so to dry before I could safely touch it.

-Thanks
Do you know who stocks this in the uk?

http://www.behlen.co.uk/Merchant2/merchant.mvc?Screen=PROD&Product_Code=B101-0871&Category_Code=AEROS

http://www.behlen.co.uk/Merchant2/merchant.mvc?Screen=PROD&Product_Code=B101-0871&Category_Code=AEROS

Thanks