When I first got my TGK PPs I removed 15grams of lead from under the CAPs from about the 10 to 2 position as I felt it was too unweildy. Slowly but surely I've got the 15grams back at the same position (someone at head knows what works) and added 6grams to the butt. All this plus the standard silicone in the handle my sticks weigh in at 352grams and still head light.
I can honestly say that its made the world of difference. I can control my swing better, my shots just seem to find the court on far more frequent basis. Every ball is heavy, blocking shots is simple, no big swipes at the ball required.
What got me back to trying a heavier setup was that I picked up my Prostaff Classic 6.1 from almost 20 years ago. I was 16 then and able to swing that thing without a problem. I played with the fairway grip and a tourna overgrip, approx 357 grams. Not once did I think it was too heavy back then - I'm not a big guy by any means, but I'm bigger than I was at 16!!!!