I'm trying to stiffen up the rear suspension...it has a lot of sag when I load up the rear rack and bags. In getting ready for a long road/backroads trip I want to be able to carry enough gear for a week or two. Right now the suspension looks like it is at the end of the adjustments and it still sags about 3 to 5 inches when loaded up. I also tore up the lic tag with the rear wheel without any load...just doing backroads. The suspension is just too soft. I'm 6'4", 225lbs. Any suggestions?