Hey--thanks a lot for the help. Looks like you're a real night owl like me--2:45 in the a.m. here. I actually found that part as well about a half hour ago by googling 'Sid negative air shaft'--for about the same price. Are you 100% certain that this is the correct part? I did a partial visual comparison ( could only see the end of the shaft with the valve sticking out from the base plate on my fork) but felt pretty strongly that it is the right part. But I didn't know for sure if that part we found online was for a 28 or 32 mm Sid. I don't even know if the newer forks use that system any more--probably not. I was going to phone RS tech line on Monday with that part number. Can you verify with certainty that it is the identical part found in the 2002 Sid Race Carbon?
Re location--I am about as opposite of an urban setting as it gets. When installing Windows I named my computer 'LostInTheWoods' and that pretty much sums it up. Rural east coast Canada.--kind of depressed economically, but really beautiful country. wouldn't want to be anywhere else.
It is getting a bit pricey getting this fork up and running--I spent $75. w/shipping for the rebound damper seal head, and the service kit. I work as a visual artist, and $$ are pretty tight most of the time (also do bike repair on the side). I actually had the same thought to find an old Sid on Ebay for parts. But so far I have only seen forks in good condition that were selling for too much. And waiting is a bit risky as these parts are disappearing. Anyways, I will probably pick up the new part as I don't like having to work on mine in it''s damaged state. I have been wondering about what kind of method I could improvise to remove and replace the base plate, as besides the stripped base plate the part works fine.
The fork is going on a bike that I built several years ago, and have upgraded over time. The frame is a Mongoose 'Triomphe' Pro--a titanium frame made by Ti Sport (hand built in the U.S.A.)--rock solid frame using straight gauge tubes I think. I got that frame from 'Mongoose' back in 2001 on a warranty claim on a chromoly frame with a broken downtube, and paid them $300. to trade up to the Ti frame.
Other parts include XTR hydraulic brake/shift levers, brakes/rotors, r. Der., and hubset--all STM965. Bought the XTR stuff around 3 years ago on Ebay NIB for about half of retail. Chris King headset, Thomson Elite seat post and stem, Selle Italia Flite TT saddle, Stans NoTubes Olympic ZTR rims w/DT Swiss spokes, Maxxis 430 Wormdrive tires, Race Face Deus XC crankset (26-36-48 rings), Ultegra casette, Xpedo ti pedals, Titec Ti handlebar. With my rigid carbon fork it is about 20 lbs.give or take a couple of oz. (not sure of exact weight)--used for both road and trail.
Anyways, sorry for another long winded post--I live in the woods like a recluse with my two Kuvasz dogs so maybe you can cut me a bit of slack--ha ha. Thanks again for your helpful efforts--I guess your feeling is the same as my own that it would be best to replace that part. My main worry is that after spending all of this I will have something else go bad like the lockout system, or god forbid, a cracked steerer.
One last question--I got the same service Kit that you showed in this thread. I found upon inspection that one of the conical bumpers on the bottom of the shafts (bottom out bumpers??) was damaged. Does that kit include a set of those? Also, I am considering to order some Enduro seals from RWC. RockShox tech said they would scratch the stanchions. My fork had the CSU replaced with a later year model with the 'slippery silver' stanchions (are you familiar with them--2004 or 2005 World Cup I think) because of a crack in the original carbon steerer (all covered under warranty). Any issues there with the slippery silver tubes I am using, and the Enduro seals? Thanks again.