I just wanted to bump this thread, I have spent alot of time with this racquet lately. I have tested different set up, strings, balances and all. (I have no paint lettering left on the inside from 3 to 9 o'clock). That's how much I played around with it. All I can say for now is in the thick beam and 100" racquet department. This Formula is for sure first in its class.
I'll write up a full blown review when I have time. Sure it's not the most solid racquet out there, it never will be even with heaps of lead, but for its intended purposes, it gets the job done with no arm pain at the end.
Stay tuned! (I have to hit the courts now).