I'll need to dig up the paperwork from when we bought it... there is over 200k miles on the odometer now, so it is probable that a clutch could the problem. I was just puzzled by still being able to shift gears with no problem engaging the transmission (no sticking or grinding...). I have a friend coming by to look at it, and this gives me something to sound reasonably competent for when they trailer it to get it to a shop... Thank you!