Changing draw lengths on a tru-arc+ cam
In the manual it ways there is no need to press the bow to change the draw length but do I need to back the limbs off?
No, you don't need to change anything but the psition of the module. Just be careful that you have the Tru-Arc+ and not the original Tru-Arc. The way you can tell them apart is that the cable attached to the module on the Tru-Arc whereas it connected directly to the cam body on the Tru-Arc+.
All you need to do to adjust the Tru-Arc= is loosen one set screw and remove the other one. Move the module to the desired location and insert the screw you removed and tighten the other one. Don't forget to move the mod the same on both cams.