I decided to take the SU carb off 'Thunder Road Pickle Dog Cat' and go through it with my friend Jon at Rivera Primo, who is the SU master. Within about 10 minutes it was apart, cleaned and back together. I'm back on the road and it is running like a dream! Thanks Jon! If you are looking for anything from SU parts to a complete carb...Rivera Primo still have it made in England all brand new!! Rivera Primo.