Further thanks to Richard for completing the job of replacing the pickups in my Kawai. There were a few issues with the first set of custom pickups which, frankly, weren't giving me what I wanted from them so they went back. One set of active Wilkinsons and some reshaping of the pickup cavities later (doesn't that sound easy!!??) and the Kawai is again knocking out some fantastic tones.
Richard even brought it round to me, however the neighbours' sleeping child meant that I didn't get the chance to try it on the night. Played it this morning - as stated above, now kicking out great tones.
I need to point out that luthiery isn't Richard's chosen field and that all the work on my Kawai was done around his full time job. Hopefully now he can relax a bit - go fishing, play some golf or whatever helps him chill.
Good man.