I recently had a trip and use my Manfrotto 055XPROB tripod a lot. When I did a long exposure near the ocean, my tripod got washed by sea water and there is a lot of sand sucked into the tripod leg. The sand makes the sliding mechanical stuck and become hard to lock and unlock the leg. I tried to wash the tripod especially its leg to remove sands from the tripod leg but it didn't remove the sands completely. I'm planning to remove the leg one by one and wash the inner part of the leg to completely remove the sand, but I don't know if its possible or not to disassamble it. There are some screws on the leg but I don't know what are those for. The owner manual didn't come with instruction on how to remove the leg either. Does anyone have idea? Or any experience in cleaning this tripod?