Is it me or are the drip caps on those TV bottles unusually hard to remove? I actually gave up on my first attempt to take one off for pulling into a pipette for mixing and ended up just squirting an approximate mix of liquid and doubler into an empty bottle. Normally I just grip a cap with a paper towel and pull/twist the bottle, but for whatever reason, these caps didn't want to give. Anybody else run into this? More important, did anybody figure out a good method?