and have had problems with the nipple breaking off? I've bought 4 of em, and they've broken off an 3 of them. The 4th is at the bottom of lake Washington from last year. LOL I tried using a bored out syrenge but if it's cold, I had to push to hard and it broke. Sure it works great when it warms up but when it's cold those nibbles just don;t wanna go through the hole