I noticed when I drained the lower unit last fall that the lube was cloudy. I have the lower unit out to replace the prop-shaft seals and the impeller. <br /><br />Two problems:<br />1. I got the rubber part of the impeller off but the metal hub that fits around the drive shaft is frozen in place. Is there a trick to removing it? I tried heat to expand it but it won't budge.<br /><br />2. Trying to pull the bearing unit (behind the prop) with a puller and it too won't budge. I'm concern about cracking the case or the bearing unit. Any suggestions on how to get this out?<br /><br />thanks,