Rebuild or replace a cluster unit? What questions do I need to ask?

Rebuilding a cluster on these trucks is relatively easy. If you know how to solder its a plus. Normally takes about a half hour and the parts to redo the stepper motors cost about $20-30 to do the rebuild. Here is the tutorial i used to do the 3 i have done so far. http://www.youtube.com/watch?v=oTm2oDx-_GM