Re: Fine tuning - Edge Pro II
I have an RG220B that has the Edge Pro II on it. My experience with Ibanez prior to getting that guitar was RG550's, and UV's with Edge's and LoPro Edge's. I'm not sure if this might be your problem but I noticed with the Edge Pro II the fine tuner ratio is higher than any other Floyd type bridge I've used (OFR's, Floyd PRO's, Edge). That is to say, it takes more turns of a fine-tuner to get it to do anything. I swear, I can turn them sometimes and it seems they do nothing. On the plus side, at least with mine, the springs were heavier than normal and other strings weren't changed as much by one string being tuned.
All I can advise is to get it as close to tune as possible with the headstock tuners before locking the nut. You might want to take note of which strings move up or down when being locked at the nut and compensate for that first, before locking down.
I find the Edge Pro II gets a bad wrap. No, it's not an Edge or Floyd Rose Original, or PRO, but I have had no problems with it keeping tune. The arm and how it's held kind of sucks - flutter effects are out due to that.