I use the Reese dual cam as well. 5 links under tension is the minimum recommended for trunion bars such that the cams do not hit the frame when turning. The other option for more WD to front axle is to increase the tilt or hitch head angle.
But do not arbitrarily adjust. Start over. Unhitch, measure height of front wheel well at highest point. Drop tongue on the hitch, measure again, it should go up. Then apply the WD bars and measure front height again. Your goal is to make the unhitched height match the with WD bars height.
The dual cam system is a picky about being adjusted well such that the detents in the WD bars are centered over the cam lobes when going straight. When it's off, 60mph is scary.
This video and instruction were helpful to me when I made some changes to my prior TV and then readjusted for new TV. Basically, drive aroudn with the cam arm nuts loose, a couple figure 8s, straight for 100', then tighten the nuts.
6500 pounds empty (MFR dry) could be 8k pounds with 1200 pounds of tongue weight. not that your is, but that is pushing the rear axle and receiver limits.
For your pictures, it looks like they might be on your hard drive? The img tags are correct, but they have to be somewhere on the internet with the address between the img tags.