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If that's all it needed why has it taken you 20yrs to do Looks to be running well now, could do with a cast base though and a lick of paint Did you fit the O ring "insulator" in the end?
To close I’d like to say that these particular models will definitely run but the fit and finish has to be meticulous. Too tight won’t do at all, too loose and the noise is almost deafening. The term “ Goldilocks zone “ springs to mind.