We purchased a 2021, 30' GD Reflection 1500 series this winter. After purchasing we upgraded our towing vehicle to a 2021 Chevy Silverado 3500 HD 1 ton etc. Have taken it for it's maiden trip and encountered the following issue and need advice. The truck is higher than the trailer. In order to connect we had to have the tailgate down and was not able to put it up or it would have touched the hitch. We have an Anderson Ultra hitch. The bed of the truck is about 2.5 inches too high. Does anyone have advice on the best way to correct this? We ended up driving with the tailgate in the down position which we feel is not ideal. Thank you.