My mate rode a Merlin blagged from Dave Renham in the Sammy Miller Trial in Devon recently. He really struggled and was way off form almost entirely due to the ancient rear tyre fitted. It had age hardend and was utterly useless. However I had a quick ride - engine ran well, had decent power & pick up, - but rest of bike was loose & twitchy.....This was a well used example hastily pressed into service & is probably for sale - all collectors please note!