I agree with MoverZ on the allignment point..

basically, compressor deals with gas so fluid density is not high.. So first, disconnect the flange from compressor (i.e remove displacements). and run the system.. so all dead weight will come on the first spring.

From Output, consider WNC loads to design the spring and adjust the load if required..

It will help in allignment issue also..

Correct me if i am wrong...