I just posted about my new pure about speeds and tuning and the DL coming up short. Now I just bought a used 2010 GT500 on AT and I'm having the same problem. I did a limb swap and blueprinted the strings. Specs w/in 1/8", poundage at 70.2#, but the DL came in 28 3/4". So, and don't know if I did this exactly right, but I added 6 twists to the cables and let 8 out of the string. (technically 1/2 twists) And now its coming in at 72.2# and 28 7/8" with #3 29" mods. I can still untwist string a little but I didn't know if I should, I don't want to go too much ????? Right now twist is 1:1 3/4" Cams are perfectly in sync and both hitting the 4th dot
On my pure I ended up having to go to 29.5" mods.