You can use silicone electronic Grease just put it over your connectors and make sure that there's plenty of it. When you need to work on it you will just have to wipe it off and reapply
I've never sold a RC in my life. I just collect them. I'm not trying to lowball him I'd give him $25 no questions asked. I'll even pay shipping. Rolex would just put it in his hermetically sealed display case and show it to nobody anyway. :stick:
I think you should just sell it to me and I'll fix it then you won't have to worry about it and you can go buy a new one. And I have all the parts to upgrade it so you won't have to feel bad about me spending money on it