Removing glued mount without ripping exterior
We have an old bicycle mount on the outside of our RV, and it needs to be removed and replaced with a new one which will fit the modern bicycle. Unfortunately the old mount is glued as well as screwed on...the glue (which may be silicone-based, as where it has oozed out a bit, it is putty-like) is holding like a rock and we cannot pull off the old mount. We don't want to rip the outside skin of the RV, obviously. Does anyone have an idea for removing it?