A client brought interior parts (console, steering wheel) in for us to put a burl dip on. He had primed them (except for the steering wheel). At the time he said he used a urethane; later he said it was "poly" primer. At any rate, pieces were done as usual, but went crazy with cracks and bubbles after the clear (we use JB Shopline from Colorvision). Thinking it was the clear being re-coated too soon (12 hrs despite it stating 8-10 min. dry time), stripped the clear and re-did it. Same thing happened (except for the steering wheel, which he didn't prime, and came out fine the first time). Someone said it was probably his primer, so we stripped it and re-did it. Worked that time. Of course, he's bad-mouthing us and saying it's our fault (despite not ever having this issue in over 6 years of doing hydrographics). Thoughts?