Always worth trying T&L Engineering, Pear Tree Farm, Wilstead Rd, Elstow, Bedfordshire, MK42 9YG - 01234 352418. Superb people with an excellent set up, specialising in vintage and classic engines. Did me a 3-bearing AMC crank a couple of years ago in 24 hours by appointment and also trued up a rod and dug out some fasteners. Very inexpensive. Shop is full of interesting stuff like ours, they like old things and they also have a state-of-the-art dynamic balancer if required. Thanks to them, managed to blow it up one weekend and have it back on parade running fine again the following Saturday - in France. Still going like a train.