I have a 99 GT with the following: Motor sport B Springs, MAC CC Plates (I think they are MAC) Cobra R replicas with 245/45 17 Kumhos on them, the problem is the car will not hold an alignment, I have it lined up and everything feels nice and tight for a while and then I have to have it re-aligned. I have to take her in about every 3 or 4 months and I only drive the car about 200 miles a month. Do I need to look at more parts, then what and I will get them, do I need to change parts?