I have a 2.7 that has been sitting for a few months after completing 3 dives. After each dive it was rinsed in fresh water and all motors were hit with some of the silicone wd 40 product that was suggested. After applying the most recent firmware update I decided to just check and see how all the motors were running and noticed the port side was always a little slower than the others, there was nothing touching the housing. Additionally if I manually spin the motors the port is harder to spin? Any ideas would be greatly appreciated, or links for ordering a new motor if that is what needs to happen.