I think you just need to get in sync with the bike. PC is not going to do much for that. It may help you learn the predictability of the throttle, which might help just because it smooths things out. Trust me, if you get the satos and the pcIII and you get the proper map with the accelerator pump figured out, it will be like the bike is intrinsically attached to your wrist muscles with nothing in between. I just settled on a perfect map and did the accelerator pump yesterday. I have been riding this bike for over a year and last night was the reincarnation. It has a pull in the ass that just keeps comin.
The "lash" is because it is a fuel injected bike with a big engine, good throttle response, and most importantly, torque. Just get used to the bikes little quirks, which they all have. Once you know the on and off positions well, you will be able to anticipate all her moves.
Listen, the best advice anyone is going to give you is the following:
1. GET THE SATOS
2. GET THE PCIII
3. MESS AROUND WITH THE MAPPING
4. most importantly, RIDE THE HELL OUT OF IT!!!
Did I mention, you should get the pcIII...?