On our 375RES after delivery I noticed the springs had negative arch. After some discussions GD told dealer to replace springs. I'm wondering if this is a result of above failures. Now the issue is the new springs cause the rig to sit too high. I leveled the rig using only the front jacks and it now measures 13' 8.5 in high. Dealer is in the process of contact GD for how to lower back to a legal 13' 6" as stated on pamphlet and legal requirement east of the Mississippi.