I have my L3600 tractor split. I have always had a small leak out of the bell housing water drain. I figure it is from the seal on the front shaft. #70 in the diagram. It shows two of them. Has anyone replaced these without tearing it down any more than this? Any tips on getting the seal out? Thought of the screw technique or trying a small pick. its up in there a fair amount, so access isnt that great. Thanks .