Hi Read,
Unless you've changed the cam for a hotter one I would suggest going back to standard needles to see if it runs properly then experiment with richer needles, just a thought....
Have you had a look at the myriad of TR websites in the U.S.? The Teri Ann Wakeman site,
www.tr3.info from memory may be a good place to start , best of luck and keep us informed!
