Dan,
I have Trykon and I had a very difficult time getting it to tune.
My problem w/ it is the floating yoke systwm that hoyt uses.
To make a long and frustrating story short, I changed the string and cables. I put a static yoke system and had it tuned in 3 minutes.

The floating yoke allows the top cam to cant and move during the draw and shot thus, allowing the string to vary it's path during the shot.
I pulled my hair out for 2 months trying to tune it.

After you put a static yoke on just set the axle to axle exactly the same on both sides and that should do it.

My Trykon is dead nuts tuned now. Shoots bullets through paper and broadheads and field points are the same impact point out to 45 yrds.
Your center shot will be about 7/8" from the riser bolt to the center of the arrow. And make sure you walk back tune it because it does vary from bow to bow.

PM me if you need any help or contact TFOX on this forum. He's a Hoyt Nat'l Shooter. He can help too.