How did you set your timing?
Running non-stock intakes or exhausts will cause most issues for tuning. Also with your year carbs the idle mix screws tips tend to break off in the carbs making tuning impossible.
Setting the timing by static method is only the first step. This will only get you in the ballpark of where the timing should be. Next, you need a timing light to get the timing perfect and then you can get both cylinders firing when they should be. I forget how the points plate works, but I thought it was that the plate controls the right side and the left side is adjustable once the plate/right side is set?
You cannot continue tuning until you set timing with a light. Which also brings up the possibility that you probably didnt check valve lash either.
I actually feel pretty stupid asking for help, then getting all defensive. I do have a stroboscope? "Timing light" but the bikes been hacked up pretty bad and im missing the centre stand and probably the mounts to attach on. Need to get me a proper lift.