This, just had to redo mine using the deflating method -- was pissing off the neighbors with all the honking, but worked just fine -- I find you end up letting out quite a bit of air ~5-10psi, but it's also kind of dependent on how quickly the system refreshes so some tires it was really quick, others it took awhile. I think the manual says up to 30 seconds.Yes, get them into their final position, then do the re-learn process. You have to inflate/deflate the tires in the proper order for it to work correctly. Some times you have to sit there lettign the air out a little longer than youd expect, but it does work.