... I would also invest in a UNISYN carb device(available at Summit Racing) for balancing them. Are you fabbing your own intake manifold?
I have a unisync left over from the Triumph 2 Liter I owned back in the late 60's. I remember trying all sorts of things with them but I've slept since then....
Yeah, I'll fab my own manifold. It'd be nice to run progressive linkages and just use the center one for idle.
If I get all 6, I'll probably end up with 3 good ones from the batch.