Unfortunately the accredited forum expert on R230 folding roof leaks was banned a couple of weeks ago. Do a search on R230 roof leaks and water proofing the central locking pump there is a lot of info on the forum.
If Malcolm (aka Television) decides to return to the forum you should be able to get detailed instructions from him.
Can anyone tell me the best way to waterproof a central locking pump please? I know replacing the roof seals is the cure but cost puts that on the long finger. I have been thinking of plasti dip-has anyone tried this product?