Regarding the dual rate adjustments. I think the problem is more lazyness than anything else. When your on the track about to go into one of your heats its easier to adjust the trim rather than go into the menues to find the sub trim which requires you to zero out everything etc... As he mentioned he never noticed this until recently which means that what he was doing didnt affect him much and he was able to run a good race. If you have time, then doing it the right was is obviously the way to go. However...