[Masterglass]

I know delta does'nt agree but all resins have a percentage of shrinkage, so cure under pressure always. They also have a exothermic reaction, so after curing around the injector under pressure, remove injector and before applying pit filler, cure for 2 minutes then apply pit filler and cure again, I guarantee your repairs will be much better. If you have ever wondered why you see so many repairs with the pit filler gone, this is why. If you trap the gas in the break a little black will reappear where you had it clear. Also, the gas will push on the not fully cured pit filler and pop it loose. Hope this helps.