Has anyone else had problems with the Limbsaver Recoil pads getting sticky? Shortly after installing one on my .338 Win Mag. it has gotten really nasty. It leaks a sticky substance that glues everything it touches to the pad. Such as pulling felt out of my gun cabinet. I've washed it, dried it, even tried to paint it. But it just keeps leaking. What's up? Is this a common thing or just my luck?