PLEASE HELP ME!! (pick out setup)

[JThiessen]

I think you are looking for a technical excuse to buy yourself an RX-8. Nothing really wrong with that at this point - we have all done it when something new comes along. I'd just hate to see you posting on here in two months with the same symptoms on your new system. I too am tempted to come up with a reason to buy one of them!
You have been given many examples of similar setups that run the way you want yours to, I think maybe the key is driving style as you seem to run yours somewhat different than most of us. I'm also suspicious of when you stated it really is dependant on ambient temps. Unless you are running in 100+ degree temps (and on hot pavement) for an extended period, it shouldn't put your system into an overheated state. I havent re-read the thread to check this, but how well is your body vented? Maybe its something as simple as that? Try doing a few runs with the body off and measure the temps.

Like I said in my pm to you, my Flux runs very well on 6S, and its about as close as you can get to weight and motor set up to your muggy, and its geared for about the same speed.