Do any of you use the Epo-Grip thin set/injectable epoxy for your bird feet? If so, have you run into a problem I am having with mine; namely, that the Part A bottle is starting to solidify on me (no, there has not been any cross contamination of the two parts). I have only had it for short time. The material works well but is too expensive to only get to use maybe 50% of it. Anyway, I was just wondering if anyone else had experienced this problem.