My current set-up is a pair of rings and a doorway pull-up bar (one of the frame-like ones, not a telescopic one). I'm doing the killroy70 template (I started on Monday) and I've realised I can't do the pullovers. I can't do a muscle up for one thing, and for another, even if I could get into the top position, my bar won't allow me to roll over it like you're supposed to; the door frame gets in the way. I can't see a way of doing it on rings, so for now, I'm pretty stuck.
How can I overcome this problem, or should I substitute for something else?