I recently purchased two used Prince TT Scream racquets. Much to my surprise they are different. The first one I got seems to be the same racquet sold by TW--I'll call it Scream 2. The other one is probably from the first generation of the racquet--"Scream 1". Both are OS, by the way. Scream 2 has a noticeably smaller hoop than Scream 1 by about 1/4" in length. It is also over all about 1/4" shorter. Scream 2 has a Prince Power rating of B875, ("B" for balanced?) while Scream 1 has a Prince Power level rating of 850. I thought I was getting an identical backup. I guess not! Can anybody explain this? I once bought a Head Atlantis 660 from Big 5 made in China that was very different from the made in Austria one my friend had, but then that was Big 5, which I know carries cheaper knockoffs.