If possible, return the rebuilt unit for a refund, and buy a new UNICLA brand compressor. It should about the same cost, or less.
http://www.ackits.com/ is a source. If you ever disassemble your defective unit, you will see all the wearing surfaces that may, or not be, resurfaced by a rebuilder. There are no industry standards for rebuilding compressors.

Replacement of the evaporator is a MAJOR job. Some models have something like 22 hour labors as the flat rate.