Manuel

Mine starts ok even from hot (this was not always the case and why I tried the Mikuni before) and I actually bought a Mikuni and tried setting it up and agree - a nightmare. But the Mikuni I borrowed was already set up and ran fine but didn't fix the stalling and starting problem I had at the time.

I have inspected the spacer and can't see any crack and I have tested for air leaks - but yes the test only shows external leaks not one that vented into the carbie - better check again.

You mention a guy who resleeved the Amal - can you remember who he is?

When I look at the slide in the Amal it feels like a very nice snug fit no noticeable movement - but who knows what it's like once it gets warm.

As mentioned elsewhere I briefly retried the Mikuni - then replaced Amal. I checked the spacer and no visible cracks although it was slightly distorted on the carb side - I had previously reground the manifold face and so did the same with the spacer and got it nice and flat.

I'm carrying a slight injury so haven't given it a real test but I am not confident.