We found this company, which makes an extension for your tailgate cables. This allows you to offset the ramp angle of your tailgate. We have not tested this product, but here is a bit more details so you can see if this will work for your needs. Hope this helps!

Rider Tailgate Accessories has developed an innovative new truck accessory called the Tailgate Lowering Links which, when added to the existing tailgate support cables on a truck, allow the tailgate to lay flat.

For example, the tailgate on a 2013 Ford Super Duty is about 1.5 inches higher than the bed (See Photo). With the Rider Tailgate accessory, model FD1, the Links allow the tailgate to lay flat or about 1.5 inches lower than the level of the bed (See Photo):




Rider Tailgate Links are constructed to allow the tailgate to be lowered without the tailgate contacting the bumper. The amount of tailgate drop varies from 3 to 5.25 inches depending on the truck. This patented product is the only product on the market that lets consumers lower, and use, their tailgate in a position that is lower than the conventional open position.

Rider Tailgate Lowering Links are engineered for strength and performance. To learn more about this innovative patented product or to see what other truck models they fit, call at 801-678-1405 or visit their website at www.ridertailgate.com