Got a few questions, my rear shock linkage pivots side to side is there suppose to be play here?



Also it's all grimy looking because my rear shock spits oil, I found a replacement seal but how hard are they to replace?



I'm assuming the overflow bottle only holds air? I see a stem coming out of it do you fill it to increase stiffness?

I have a spring compressor but the oil inside is what I am really wondering about, Thanks.

 

BUMP

I figured out the reservoir is filled with oil, I bought some shock oil but can not figure out how to replace the head seal:



The head seal is held down with a c-ring/clip but I can't seem to remove the ring, almost as if the seal has been pushed up farther then normal closing the gap a bit where the ring clips in. I tried using a socket to knock the seal down a bit but I don't want to damage the body or anything, any advice?