This will be easy to spot if you are running a single map. If you are on 3D maps this takes more time to sort out.
If you have a laptop this is easier, you can scroll through the maps and look for any funny bumps in the maps at 2000rpm.
With a hand controler this is difficult and time consuming.
Your local MicroTech/dyno tuner will sort it out in no time. Does not sound like a hard job.