I'm sure you are aware that there is no little fix for an atx that slips a little. Presumably car has been discounted accordingly.
Buying a lower mileage engine/atx from a wrecker + installation might be cheaper/wiser alternative.


98 Mystique LS v6 atx 110,000km
97 Contour LX v6 atx 125,000km
stock CD on LS, cass on LX
spoiler, tinted windows on LS only
4 wheel discs on LX only
All other available options on both