A tunnel protector is a good insurance policy, though. If the track gets loose, the studs will tear into the bottom of the tunnel like upersleder tears into an all you can eat buffet. If they are cheap, put one on.
__________________ 1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month!
1993 Ski Doo Mach Z 780 triple
2001 Ski Doo Mini Z