Our new Eagle HT 28.5 RSTS has two sets of shackle holes. The springs are in the upper holes, and I would like to move them to the lower holes to raise the 5er up some to get closer to level with truck. Is there any problems with doing this? I will also be lowering the pin box by one hole. This should bring me to level when all hitched, and still remain 5"-7" clearance off bed rails. Am I doing the right things to get level????????