Flame and decel popping from rear cylinder
Ok, I'm sure this is a rehash of some previous discussion but here goes... the bike I'm finishing returning to life has straight pipes (rear pipe is shorter than pipe from front cylinder but not by much since it has to bend down and under the bike to the right side), I have KN air pods and only the rear cylinder is popping with flames on deceleration. I do not have lean popping when slowly increasing RPMs from idle and have the air screw backed out about 3 full turns. I am unsure what the stock needle settings or jet sizes are but I know someone has been inside the carbs because they were put together wrong when I took them apart to clean them.
What I need to know is if someone is running a similar set up and if so, what size jets, what needle setting, etc... I'd hate to cook my exhaust valves shortly after returning the poor girl to life. Thanks in advance!