So I bought 5 push-in nipple waterers, drilled the holes in a juice bottle, and was on my merry way making a 2-nipple waterer for my chicks. One of the holes didn't bore as well and leaked from behind the plug. I cut open the bottle and took them out, but now I have the nipples stuck in the black rubber plugs. My question - when I drill into PVC pipe next time, can I just push in this whole apparatus that is already stuck together? I think my chances of getting the plugs off undamaged are pretty slim. I used *that kind* of lube and it worked great, but it's very slippery and I've had a darn hard time trying to get the plugs off the nipples. Any feedback is appreciated! Edited for clarity.