Flap control rod

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New here. Anyone tried to R&R the flight control rods for the flaps? These are the long ones just behind the aft spar between the W.S. 66.00 & W.S. 162.00. 'May have to remove at least one if the recently discovered score in the tube/rod measures 10% or more. We'd really prefer not to have to disassemble the wing etc. There's no method offered in the maint. manuals, and we've called to a few Service Centers, who are also stumped. Cessna is back-logged with thier Tech. Rep.s currently. Thanks, in advance. Ed.