Quote Originally Posted by peteer01 View Post
People more knowledgeable than me can weigh in with a better answer, but I believe the way that the Horsethief is designed means the rear shock shouldn't need to be adjusted for most people riding off-road.

From Dirtragmag:

That said, assuming you bought the bike at your LBS, why not take the bike in and have them make sure you've got your rear shock properly set for your weight? They should be able to let you know if it seems like it's not working as designed, and would be able to get any issues taken care of as a warranty problem.
Thanks for the advice peteer01. As I said, I'm new to this - so new that I'm right now looking for a rack system so I can transport my new bike on my compact car. Fortunately, there's a couple of trails suitable for a novice less than a mile from me that I can ride to. Until I figure out the rack, I'll try the next best thing and see if I can get in touch with someone at the shop who might be able to help provide some help over the phone.