I just purchased, what I'm told is a 98. "JTX270 Contact" has computer, also has trapezoid shape welded closed silencer. It needs some attention, but for $950 US its a deal. I've never ridden a trials bike (lots of cross country 08 KTM 300XC) and I'm having a blast! I rebuilt clutch master cyl and now clutch is good. Added kill switch, re-wired fan and T-stat, have wheel bearings to replace. Silencer obviously needs repacking but how? If its not possible how can I find a replacement that is?