Mancini extra heavy duty springs sagging

So the problem is that I bought them 5yrs ago and just put them in the car. I talked with a Rep at Mancini and they are different RH/LH, they are installed correctly (50/50 shot). Mancini can't do anything for me since I bought them so long ago. Shorty after I bought them I got a 4 year assignment to Japan(USAF). I'm thinking I am going to go to the local spring shop to get them re-arched? Anyone have thoughts on that?