Found anything yet tomzsix?

I just found I have pretty much the same problem. The engine's fine on the lower part of the hill, but as I climb and press the gas pedal more, the engine violently coughs and dies. If I drop to first gear and crawl up the hill at low revs, then all is ok. Luckily, I live in a very flat area so hills are a weekend optional.

I've been told that it's the 2nd chamber in the carb that's not opening up when the required boost under load is needed. Not sure how accurate that is, but I'll be checking it out further.

Rob