Yeah, I had dreadful trouble transferring my Riff Raffs into my Faded SG earlier this year. The pickups plug in to the board. The plugs don't appear to be "re-usable", and I couldn't track down the right ones in my haste to get the BKPs into the guitar (it was kinda bought for them...). So I ended up having to cut the plug off the old pickups with an inch or so wire left, solder the end of the BKP hookups to the wire, insulate, and then plug em in...
Changing a pot or capacitor will probably mean ripping the whole lot out and replacing (with my skills, anyway :lol:). However, it's not broke, it works, I'm not gigging... so I'm not opening it up again until it stops working!