Does anyone have a diagram or have the patience to explain hooking up 4 stereo FX units to a RG-16? Page 8 of the owner's manual says the 8 mono loops can be configured as 4 stereo loops. The one thing that's throwing me for a loop (pardon the pun) is getting stereo output from the Output jack (between jacks Return 5 and Send 5/NC) into the In 5 jack, both of which I believe are mono (unlike the Input jack, which is mono/stereo). I understand how to hook up the 4 stereo FX units in their respective loops. Thanks!