Yes ! Stop Bloody Fiddling !
There was nothing wrong with it when you had it....!!!
Went alright for me...popped along quietly at a reasonable pace...but you had to fiddle.
Change the carb,muck about with the points,change the exhaust....couldnt leave well alone

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I seem to recall a certain 500 Enfield that was alright 'til fiddled with

Didn't you change the carb ,muck aboout with the points,change the exhaust , couldn't leave well alone ,,even changed the big end so i recall {twice ? }
If we all quiet we can hear a pot refering to the kettle .....................................

Rib