John lived just up the road from me and I had the pleasure of chatting in his workshop a few times. A very knowledgeable fellow who, despite having short thrift for idiots (which is possibly a more polite way of saying "grumpy"), was always ready to share his knowledge and experience with this particular idiot. I suppose it helped that I always came armed with Hobnobs.
RIP John, you were a credit to the community and a great person to have met.