Hi all may I seek your advice and experience please. A Norton 850 Commando Mk III. Picked it up rode it 60 miles and no issues. It's got the period Mikuni carb conversion and behaves fine most times. It idles well but some times riding it along at commuter pace it just cuts out. Usually by the time it coasts to the road side, a quick press of the electric start and she fires up again. I try avoiding premium or higher octane fuel and whilst the fuel is 6 months old, to me it doesn't seem to be suffering what I'd expect stale fuel to behave. Does it sound like something is overheating in the electrics? I've checked and not found any loose connections. Timing is right. In fact everything I've checked is in my eyes correct. What do you guys think? Where to look next or have you experienced this before? Any feedback appreciated. Cheers.