Put on new timming chain and oil leaked from gaskets so I pulled the engine to replace gaskets, retork heads, and clean and paint engine. Also put in a HEI(using 12V power), and Road Demon carb. Now the exaust has black, sooty water splattering out!!! No smoke just water adjusted air/fuel mixture screws as it says in demon manual but if I open the secondary screws at all it start to smoke. So I have to leave them completely shut which is kind of weird. Otherwise seems to run fine. Also I notice a very slight poping or missing sound from the passenger side exaust. Any ideas on my problems guys? .035 gap on plugs, 10-12 deg advance, vacumes fine, fuel pressures ok, not sure on compression.