If you can get some pictures, do so. It will help those here give you some advice. It will also help the folks at Alembic figure out what, if anything they can do to repair the bass.
Most Spoilers I've seen are going in the $1200-$1500 range (approximate - some are going for less than that) in decent shape with case. From the sounds of it, you'd have to replace a tuning peg, the pickup selector switch, get a neck repair, etc. Could be costly. Without seeing pictures, it might be better for you to look for another used one, unless you have the scratch (and inclination) to have this one repaired.
Alan