First off, congrats Gary on your win this past weekend, awesome shooting
I'm still waiting for a set of long mods for my Slayer, but I did spend a few hours this past weekend playing with the bow with the current mods. I adjusted the cam through a variety of draw stop positions (always making sure to bring the dl back to a reference of 30") to see what effect letoff had on speed. There is quite a variation available, and the results prove out that lower letoff will produce more speed. I also played a bit with cam positioning and speed nock amount and placement. Again, there is the ability to change speed incrememtally. And finally, I did notice that the bow performs better at higher poundage. Meaning that lower weight produced results not indicative of just an drop due to the reduced weight. The bow is not only faster at higher weights, but more effecient.
I'm still playing with some variables, so I won't post actual numbers until I'm finished. Hopefully by this weekend