I demoed a Dunlop 500 tour and liked it. I want to work on my skills and stop worrying about the racquet. So I took the plunge and bought 2. However, after about 15 hours of play I am still out of sync with this frame. One of the biggest problems appears to be the balance. I'm used to racquets with a more head light feel. I just can't bring the racquet around fast enough (i don't think it's all about the swing weight with this frame). I think I'm done with this racquet. Am i leaving it too soon? How long do you give yourself to adjust to a racquet before you call it quits and move on to a new one?