Good evening everybody!
Many thanks for your replies, I quite agree about only saving a marginal amount of money (I think you’d have to cover many, many miles to show any significant savings) and since the only way to see if it’s a needle roller bearing or brass bush is to strip the top end……rather pointless if everything’s running ok. I think I’ll leave everything as is.
Besides……a gentle haze from the exhaust drifting serenely across the countryside is rather traditional with a MZ!
Kind regards and many thanks, Neil