Eric and Arron....when you are learning the combination rolling elements, like in maneuver #2 focus first on executing the full roll....then pause...then do a nice 1/2 roll....then pause....and then do the push 1/2 loop up. Slowing thing down like this is better for learning. Once you get it down, then start putting it together with the brief(perceptible) pause called for in the judging criteria.
It's very easy to screw up the one part of a combo-roll when you're thinking too much about the other. Slow down the execution for learning!
Same with the spin. Do the 1 1/4, stop it and get the plane to track vertically....then do the 1/2 roll in the opposite direction. Again, after perfecting the 1st part (the spin), then show a brief pause and do the 1/2 roll.
Same with #8....after pulling over the top, establish your 45 track, do a 1/2 roll....pause and get the plane back on track if needed....then do the opposite pos snap. Tie it back together again, once you've mastered that combo rolling element.
Bikeracer...If you over or under rotate, just hold that and fix it with the roll. It is up to the judges to see the downgrade for the spin rotation. They should not deduct for the added/subtracted roll as well....since that is double-dipping and not per the criteria. If you fix any over or under rotation and THEN do the correct rolling element, you have just SHOUTED to the judge how far off you were!