Someone had doubted what I was saying about M1 and Varrnish issue. If you look at the camshaft lobe on either side of the follower you will see the infamous M1 varnish (looks brown like nicotine staines). The owner has been running M1 since 50,000 miles and the car now has 174,000 miles on it. So you have a car with 124,000 miles of M1 use. He also states that 5000 mile intervals were used. He has recently switched to Redline so alot of the heavier varnish has probably been removed by the ester's in Redline. I am in no way blameing the pitting on M1 but the varnish is hard to miss! I have seen this varniss about as thick as 3-6 mil plastic sheeting.