These are Showa forks off my CRF250. Upon changing the oil I found one inner cartridge to be empty. So I tried filling it to see what happened. Upon compressing the damper, the oil runs out at the lower seal where teh damper meets the cartridge. It looks like a need a special hex to split these apart. Can someone tell me what I need to do this job? I'm in a financial bind and I just want to ride this thing to relieve some stress.