Hi Chris, Richard, Paul and GREGS656
Thanks to all of you for the help; it was the threads on the head, back and front. the outer was easy to do but I managed to do the inner as well without removing the head - just a dextrous use of lights, a mirror and patience :!: now she's as quiet as she should be. Took me a long time to find helicoils over here!
Regarding prices, Greg; an original exhaust is about £6.50, tyres including tube cost less than £20 a set, engine covers £1.50, so on and so on. (They were built in Poland, ten miles away from me, so spares are freely available (including carpets, hint hint).
Yes Chris, I am still thinking of the bigger bumpers, have one or two scrappers nearby that I will have a look at.
Question, :?: maybe obvious, but do 13 inch wheels, ie off a BIS or similar, fit straight on to a Maluch, which has originally 12 inch wheels :?:
Cheers all, Graham