Hi
Supreme M/cycles at Earl shilton Leics is a good shop to deal with . Extensive bsa and triumph knowledge and stock at average prices.
Similarly Brian at Lightning is a good bloke
Only issues with new cams is Hardness of material and production tolerances, beware indian copies. +would recommend stellite tipped followers(see SRM shop )
Got mine from SRM who guarantee the product and its tolerances and were no dearer than others at around £120 + p+p for a spitfire A10 cam
Peter