I had some of the Evergold finishing putty left over from a project so I used this over the Contour short strand body filler. The Evergold starting eating through the short strand filler. Should this happen? Also the Evergold never hardened up, just got to a semi rubberized state. The Evergold is around a year old, can it go bad? I have some of the Contour polyester glazing putty but thought that I would use up the Evergold before breaking into the glazing putty. I have scrapped and sanded off the Evergold. Should I be alright applying the glazing putty now?