82 Evinrude 115 tilt/trim

[GlassmasterSC]

I have an 82 Evinrude 115 v4 experiencing power tilt/trim problems. I bought the boat off a guy real cheap last summer because he said the tilt/trim was out. We got it home and topped off the fluid and cleaned off the contact points and it worked again, but the seals leaked. Now a year later it is having problems again. I can hear the electric motor running when I try to move the engine up and down but it is staying up all the way. (No, the engine is not locked into place with the locking lever mechanism). I figure it is probably best to just replace the whole unit since it was already leaking and is corroded pretty badly from saltwater. How hard off a job is it to change out the tilt/trim? I have already found one on Ebay. It looks like two bolts at the bottom and a pin at the top to knock out to remove the tilt/trim. I also know that I will have to support the engine while I am replacing the unit. Any tips on changing out the tilt/trim would be appreciated. Thanks