As some may of seen on my build thread, I had my valve springs replaced last week to prepare for further upgrades. As part of that job we discovered some lobes, particularly on the inlet cam, were worn to a point the hard casing was looking ordinary. The car has had new oil every 5k (Nulon 10w40). Has clocked 47k and has had 300rwkw for 40k. The guys are of the view that float was the most likely culprit although the car never had a fluffy idle or displayed any symptoms on the dyno. Only thi