Yeah I've heard alot of people including myself had issues with the 2008 rebound closed cartridges in Dirt Jumpers etc. (these have open bath rebound and compression damping though so I haven't had any problems with them). Not sure if you've had different issues though?

 had 55 tst's 2 on my sx, had to send them back three times, just gave them away in the end as i was frustrated as hell with them!

 Not had good experiences with the 2008's sadly

 what year are these?

 Sorry to hear that!