I can use my Right Angle 1/4 TRS in the four Combo 1/4 - XLR inputs with no problem...and also in the two inputs in question when the wires are routed where the #4 Combo 1/4 - XLR input is located (read EMPTY)
Otherwise I'm afraid the wire may spin and dislodge the connection...I've used straight input cables in those two inputs without issues...The inputs are recessed and all my Right Angle patch cables will not engage if turned 10 to 2 O'CLock
Is there a Brand/Type of Right Angle Plug that is secure in these inputs?