Ok, So this was one of those stupid mistakes that happens from time to time & I need some opinions on how to fix it. Per the instructions of the BoatUS manager, I installed my Raymarine depth transducer with the rubber gasket on the outside of the hull. It should have gone on the inside. I like to do everything as perfect as I can, so I decided to cut the gasket off the outer part of the hull with the idea that I would pull out the transducer, clean off the old 4200 caulk, re-bed & re-install. The problem is that the 4200 won't budge. I got it within 12 hours of the installation & it still wouldn't budge. At this point I have a very securely installed transducer whose flanges protrude about 1/4" beyond where it should. I work the thing back & forth for about 20 minutes & it won't come loose. From the inside of the boat I put my weight on it & it STILL won't budge. Raymarine specifically says that solvents will weaken the plastic on the transducer, otherwise I would have used that to get the old one out. What to do? I end up applying a liberal amount of additional 4200 on the now-cleaned exposed flanges on the outside of the hull & very gently crank a boat stand up on the transducer to the point where the boat stand is acting like a screw jack. This, finally, gets the transducer up enough so that the flanges are flush with the hull as they should be. I used carpet to cushion the transducer so it wouldn't do any damage. I then hop inside the boat and thread on the backing plate, remove the boat stand and the installation is complete. My concern is that the original 4200 still wants to return to the original position and is putting additional strain on the nylon backing plate. Should I be concerned with this? Any opinions out there? Allen Schweitzer s/v Falstaff C-30 Hull# 632