Tuning my GT500

[ArcheryHunter]

Take those 5 twists OUT. The cables don't need twisted.
Twisting the aim string will lower your DW, lower the DL and advance the cams. That's what you need to do.

I can but will be back to orignal settings with no valley.

[L-train]

Not if you twist the string like Geno said.
your LBs were high to begin and DL long, that simply leaves twisting the string. When you get the DL perfect and it is at 70lbs your valley will be better as well as the performance and noise level will be quieter I bet.

[ArcheryHunter]

Ok, I've removed the twist from the cables back to where I started. The aim string has been twisted to get it to 28.5 inches. The DW is 69 lbs and the draw stops are maxed.
I tried to verify that i had the metal ruler in the correct position on my draw board. After drawing the bow on the board to the lowest weight on the digital scale, I measured from string at nocking point to the inside of the grip (where post of draw board was. It was at 26.75 inches which makes it 28.5 total. Just want to make sure it's where it should be.
what's next?

[L-train]

Id put 2 twists in the string and 2 in each cable and see what that gets ya, it should tighten everything and give your draw stops a little room/valley.
Whats the ATA?

[woodbooger]

Archery hunter PA and L-train gotcha going in the right direction! L-train's last advise should start the process to more valley imo

[ArcheryHunter]

ATA is approximately 34 and 6/8ths, maybe a 1/16 more. Very close to spec of 34 and 7/8ths.
I'll make the changes in the morning.
Thanks for everyones help, appreciate it very much. Have a great and safe New Year.

Id put 2 twists in the string and 2 in each cable and see what that gets ya, it should tighten everything and give your draw stops a little room/valley.
Whats the ATA?

[L-train]

ATA is approximately 34 and 6/8ths, maybe a 1/16 more. Very close to spec of 34 and 7/8ths.
I'll make the changes in the morning.
Thanks for everyones help, appreciate it very much. Have a great and safe New Year.

I think 08.5/09 GT500s tune best down at 34 5/8"(Kevin always gave a 1/4" variance back in the day), which makes sense for yours, as you shorten the ATA, by twisting everything it will "open up" the draw stop slot(give you room to play with valley), set the draw force curve in the draw cycle in the correct place(cam orientation), and maximize performance, which makes the bow transfer more energy to the arrow(quieter/faster)
Good shootin
train

[dtrkyman]

have you measured your let off ?

[ArcheryHunter]

latest specs after adding 2 twist in the aim string and each cable.
A-A is 34 6/8ths
DL is 28.5
DW is 69.4 lbs
letoff is 15.1 lbs

i did achieve the greatest DW at late in the draw cycle, approx 11 inches. But, from 6 inches to 11 inches, it only gained about 1 lb.

If the timing dots matter, they both match and cables are between first and second dot.

[lariat]

Some very good info here. Keep us posted how the valley ends up.