first off you need to make your amrs equal. at the end of your bicep workout, throw inn an etra et t failure on your smaller bicep. at the end of your tricep rkou, throw in an extra set to failure on just your smaller tricep.
once your arms are equal, switch over to doing unilateral exercises only for a while. just one arm at atime. use equal weight, and count your repitions to make sure each arm is getting equal stimulation.
after a while, try going back to double hand movements, but make sure to really focus on your min -muscle connection, and to keep both arms doing equal work.