Oh, I'm so sorry! Please try again. If you can get it, I think you'll love it.
To loosen the tightness of the fabric, try turning the covers on the pipes just a little bit toward the center.
I agree -- those covers are a bear to take off again -- and I don't have a manicure to worry about!
Sometimes, I handquilt without the frame, especially on a small piece. Just grab a handful of the piece in your left hand (if you're a righty) and go for it.
I have never been able to do that knot by wrapping around the needle either. Just make a small knot and try to pop it through the backing into the batting. Having tension on the piece makes popping the knot easier.