Anyone have any experience with the heavyweight blanks? I'd like to get some more info regarding how they compare with the regular ones. I was toying with the idea of trying one on a 3TF, but I'm afraid it might hamper the flexibility a bit too much. Thanks for any input. Edit: I just realized the heavy blank isn't an option on the TF, but I'm still interested in the difference, as I've also considered it on my 3C.