Replying to PLEASE HELP ME!!!!!!!!!!!

 So i got the look px12 jib bindings from a season back (the black ones with the green lifter) i got them brand new and mounted them on a pair of mojo 80s from 2 seasons ago (red and white) and i have last years spk boots. they are in good condition. During a comp, i was doing 270s and my ski pre released over and over at the toe. i took them into the shop and they said it was a problem with my forward pressure and fixed it. After that it skied well for about a day, and then continued to pre release over and ove every time i would 270 or spin. I sent them back into the shop and they said that the bindings passed all the tests and were fine, and that my boots were not worn down at all. And yes, i have tried cranking my din it doesnt work. So can anyone tell me what is going on with my bindings? Why does this keep happening?