I have the same outdrive( 290 dp) and currently have the drives off. One bellows had a small amount of water in it when I took it off, so the u-joint yoke was a little pitted.Everything seems solid with the shaft , I am planning to put a speedy sleeve on the yoke at the seal placement and replace the rearmost seal running on the drive shaft. Obviously trying to avoid taking out the motors to access the carrier bearings and seals. One simple question, will I be able to remove the seal from the rear or does it come up against a shoulder from the making it only accessible from the inside?