hi wondering if any 1 can help me plse . i have a maxi S 1 speed which has only 400 miles from new . it was only used for the first year of its life then stored in a summer house for the last 30 yrs. i recentley got it going with some fresh petrol oil mix and it runs really sweet except for a small nocking noise which i am sure is from the transmission and not the engine. It is really only noticeable on tick over and does get slightly better as the engine warms(fluid level ok) can any one give me some idea as to what it can be and is it much of a fix
Thanks GPS