I wouldn't say they were completely cream crackered - one of the followers has a slight lip so I though it best to ask whether there were any out there as replacements as I have the engine completely in bits. The engine had clearly seen some action though - plenty of swarf in the timing chest and a cracked piston. Oddly the cylinder bore is barely worn with no obvious damage.
If there aren't any out there at a reasonable price I'll just get them refaced but I thought it best to ask first.
Swindon Branch Secretary
Ariels - 1913 TT Model, 20 Roadster, 28 Model D, 30 Model B, 38 VH, 52 VH
The Offroad Fleet - Bultaco Pursang, Beta Rev 3