| 
 
			
			I had the same problem years ago I am guessing a zerk is also a grease fitting? The only advice I can give you about that is when I did mine and turned the engine all the way to one side( the fitting was on the port side) the motor hit it it was a good thing I  could get a flush mounted fitting and got the head to use for it to  so make sure your engine won't hit it  oh also it worked  got the grease to come out the top too
		 
				__________________love to fish
 
 |