Karcher K4 Full control - spares or repair (Hanworth RG12)

Funny one this. Our Karcher K4 Full control was working fine last year but when we got it out in the spring it was leaking badly internally. Very common apparently. Having taken it apart it appeared to be leaking from the joint in the motor/pump body but I can't figure out exactly where its coming from so I've ordered a new one so this is up for grabs. Its been striped right down including the motor/pump assembly. All the bits are there but I can't be bothered. Might be something simple like a seal but failing that, all the rest of it works so if you have one with a dodgy hose, switch, lance etc, then the parts could be useful. Failing that it goes to the dump.