so a few weeks ago under the advisement of local suspension afficionado luca marinelli i modded the spv damper of my '05 nixon super plus spv evole mega turbo edition. ][. the mod consisted of removing on of the two shims at the top of the damper, with the understanding that it would liven up the rebound and reduce the spv-ness of the damper. what i was really looking for was a fork that felt more like my fox, although the nixon is a 145 and the fox is a 100. i had felt, before the mod, that the fork was out of wack, it rebounded really slowly but also had a lot of stiction. the mod definitely made the rebound quicker, and also made the fork sound different, the hissing/scratching noise of high pressure squirting became a lot louder. but the stiction was still there, so today i rebuilt the fork. i dumped all the old lubricant and set everything back to factory (lubricant wise, the damper is still modded.) i used motorex 5 weight in the damper as called for, and 50 weight engine oil on top of the air piston, and that's within spec. but i didn't have any 5-40 semi bath oil for the lowers, so i used 50 weight there too. my questions are these: - does anyone have any experience tuning spv dampers and have any pointers to offer? -is using 50 weight instead of 5-40 semi bath a really bad thing for the lowers? -why are there sometimes two numbers in oil specs? -i also used park grease on the top cap threads instead of prep-m, how bad is that? and why? -how exactly does semi bath lube work? what does it lube? after finishing the rebuild i'm pretty happy with the fork (relative to it's old self, i'm still ordering a fox for the bike ) redoing the lubes definitely removed the heinous stiction from before. the rebound adjust still seems to have shockingly little effect on the performance of the fork though.