Tony.
I have not used the program.
When I picked up my Dually I measured the draw lenght and it was spot on 28"
I also took other measurements such as tiller,brace height,ATA then put the bow on the weight scale to make sure the bow was to specs.
We then weighed each of our test arrows the GT 5575 XT's camo 4" vains 100gr tips total weight of 385 grs
The CX 300's had 5" vains and 85gr tips for a total arrow of 345grs.
Both arrows where cut to 26.5"
We then done a series of shots with each arrow through the crono.
and the speeds where for the GT 275 fps average over 5 shots and for the CX was 288 fps average over 5 shots.
Unfortunately they did not have of the CXL250's in stock so I could not do crono tests on those.
Dont get me wrong I am not knocking your program I just think for the new dually you might have to do some tweaking thats all.
Aussie by birth Texan by choice