[Closed] Help! I cant adjust the rebound on my pikes

Hi, im hoping someone can give me some advice here. I just got some 2nd hand rs pikes which i was aware would prob need a service but when i went to adjust the rebound the knob just continuously turns, i also tried with an allen key but same probs. Im guessing the adjuster bolt has rounded off if so is it easy to replace? Am i right in thinking the only way to have a proper look would be to totally strip the forks? Hope someone can offer some suggestions coz not sure i wanna splash out on getting them serviced if they are gonna require more money thrown at them once i get them back.