It appears that you need to transfer more weight to the TV's front suspension. TV front axle weight (TV only) was 3,200lbs and with your WDH engaged you only transferred back 3,000lbs....... short by 200lbs. I would add another chain link "under tension" as long as you maintain at least 5 chain links under tension. If you are already at 5 chain links under tension, then tilt your ball mount back toward the TT one adjustment postion. Do not transfer more than 3,200lbs because this will force your front suspension against the suspension stops creating a rough ride.
I would try a get within 50lbs of your 3,200lbs if you can...... CAT scales can have an error factor of about 40lbs.
Your gross TT weight is 6,240lbs + 780lbs= 7,020lbs. Tongue weight at 780lbs = 11% (approx.) is acceptable, but with the 28ft length of the 25RKS a 13% to 15% range will provide enhanced TV handling.
Hope this helps.
JOF CAT Scale "how to" reference: http://www.jaycoowners.com/showthrea...igh-Your-tt-tv