Shaky towing experience, please advise

Walaby wrote:
Looks like, according to your numbers, the WD hitch has not/does not put anything on the front axles. With WD bars and Tow vehicle only, your front axle numbers are the same. That could be some of it.

Depending on which numbers we want to use, the TT's tongue weight will cause a load of 300-400# to be removed from the TV's front axle.
The data indicate that 100% of the removed load was restored to the front axle via the WDH.

For the 2011 F-150, Ford specifies that approximately 50% of the removed load should be restored.
That means the WDH was adjusted to restore about double the amount of load specified by Ford.

With your WD hitch, you have about 820lbs tongue weight. Tow vehicle alone rear axle weight is 3020, with TT and WD bars rear axle weight is 3820. Difference is tongue weight.---

No. The proper estimate of tongue weight is obtained by subtracting the combined front and rear axle loads for TV only from the combined front and rear loads for TV+TT with no WD applied.
For the original numbers the estimated TW is (2780+4300)-(3260+3020) = 800#.
If we assume that 180# was missing from the "TV+TT with no WD" weighing, the estimated TW is 980#.

---Trailer axle weight of 5240 suggests your tongue weight of 820 is just north of 15%, which would appear reasonable/good.

The TW% is calculated by dividing tongue weight by total trailer weight. Total trailer weight is equal to tongue weight plus TT axle load.
For the original scales data, TW% = 800/(800+5080)*100 = 13.6%.
For the adjusted data, TW% = 980/(980+5080)*100 = 16.2%.

I think, as others have suggested, mayb the issue is the tires on the TV itself. Seems like everything else is reasonbly well setup. Maybe, as pointed out, you could adjust WD bars to put a tad more weight up front to give you some "more control".

The WDH already was adjusted to transfer about twice as much load to the front axle as Ford specifies.

Ron