Spot on iansody,big nut had vibrated loose,stopped clonking noise,hasn't improved braking function tho. Think i'm getting a little more used to it tho,done about 60 or so miles today,showing off my new toy.
Most were impressed, others (well one of them), "why on earth--blah blah". I was going to let him have a go,but then i thought nah his loss not mine.
Just waiting for manual to come through,to start the learning process.