[SSSammy]

Hi Bruce,
I have #268, also a 2004 build. I have not tried to adjust the shocks yet. According to the info that I received with the car, it has Penske Series 8100 reservoir shocks. On the advertising flyer there is a Series 7500 shown that has no reservoir and a fill valve on the top of the shock body. Perhaps this is what you have.

On both styles there is a rebound adjustment wheel at the very bottom. You might want to check these and see what they are set at. Full soft to full hard is 25 sweeps from left to right with a pin tool. There is a minus sign on the left side of the adjustment window and a plus sign on the right side. I have dyno sheets on mine that show rebound set at -10 sweeps and 150 psi nitrogen front and rear. Hope that helps 'cause that's my total knowledge on this setup.

Sam