changing the fork seals should be pretty straight forward,i think the sherco was on paioli forks then but not sure,someone else on here will let us know!when i do mine i use a good punch working it in carefully going round the seal,a seal driver would be best but if your doing it once in a while is costly.you would probably get a firmer spring(as there is only one) from steve saunders check his website at sxs for cost.if anyone knows of anyone who makes them i would like a softer one?