Refering to info from this thread, as well as PM's from Yoteless: It seems that over-tensioned roller stays (cable guards, cable stays) seem to be a common problem for Hoyt's of late, producing excessive cam lean both top and bottom (limb torque).
Does anyone know off the top how the "in-line roller guards" on Hoyt's are mounted? I'm going to swing by a shop tomorrow if I can to look, since it has piqued my interest, but if he can just back a few turns off of the tension screw (like Bowtech's flex guard), without causing clearance issues at full draw, that might be a good option here. (Of course, you'll have to re-align your cam, since you already took some twists out today to straighten the top cam).
All of that is contingent upon whether the correction you made today for the upper cam doesn't end up correcting the lower cam lean as well after a few shots. Things should "work themselves out" for the Fuel Cam (Cam & 1/2) bows if you can get the cables balanced.