Small update, had the muffler reworked by a local company, he’s joined the two down pipes into one, these feed in to a small resonator and then the pipe goes up and over the rear cross member (as original), then in to a new muffler, around to another muffler and then out as a single pipe.
it now sounds like it should! Not like a drag racer!
I also discovered the issue with the rev counter, the face is making contact with the spindle which is preventing it from turning. I applied a little bit of force to the face against the housing and the needle now moves, I adjusted it to match the idle rev and it now performs correctly on acceleration.
However, when the ignition is off the needle drops down and doesn’t sit on zero, not sure if that is correct, but happy that it’s working. Thought I’d mention the issue in case anyone else has similar!
My brake light switch has died on me so I have a new one on the way for next week and aside from fitting a new thermostat, that’s about it for updates
Stefan