hi there, Brian here, owned class A 's for 20 years, trying my luck with a 2021 Entegra Accolade.37 k XL. Two questions, #1. 6.7 Cummins, tow capacity of 12 k, will be towing a 7 k trailer, any suggestions on climbing 6-7 percent graders? Leave in 6 spd ?,use tow mode ? Watch tach ? 2100 good ? #2 macerator pump vs manual dump, I am used to the manual, never used the macerator, any user suggestions, before I make a fool of my self?