May I make one more suggestion?

On my .36 the fiitings on the remote NVA started to leak after a while (3 years). The seals on these fittings are the fibre type and they seem to go bad after some time. This caused severe leaning and all sorts of troubles. Can you see bubbles in the fuel line from the RNVA to the carb? If so, that could be a possible problem. The fix is simple, just get replacemant gaskets and seals.

Hope this helps.