Hello. I'm trying to remove the powerhead from my 1989 Johnson 88 special. I've got the lower unit off, and all the nuts and bolts removed except for one problem. I was able to remove the nut from the port side rear stud, but the stud seems to be stuck due to corrosion. When I lift on the powerhead, it starts to separate from the exhaust housing but that stuck stud prevents it from coming off 
. Any help would be appeciated!
. Any help would be appeciated!