Normal wear and tear requires the uniball to be checked for "breakaway" and the shims adjusted accordingly. If this procedure has been done recently, you could experience a stiff cyclic with the hydraulics off, but highly unlikely with the hydraulics on. If you have had an engineer/mechanic make an adjustment on the mixing bellcrank, you will definately experience feedback through the cyclic. Ask me how I know. To the best of my knowledge the mixing bellcrank rarely requires any maintenance,