I have had two other Ricks in my life, this is the third, like most people who like them I put up with shit intonation for a long time, the standard bridge is total garbage and I don't know anyone who actually use's the mutes! Ok fitting it, removed old bridge and de soldered the earth wire, the original Ricky bridge screw threads are 1.5cm and the new Hipshot ones are 2cm so re-drill the pilot holes an extra half cm! wasn't expecting that but never mind, sanded the finish on the base to solder...