Something to consider. I had similar "untraceable out of balance feeling" problems with a Ram in the past... Turned out to be some uncured asphalt that I ran over at some point splashed up on the driveshaft. The driveshaft was out of balance and it sure felt like wheel or tire problems.
There's a switch you can add in the bed to be able to turn on the lights if you want while you are loading or unloading the bed. If you tie in to a tailgate switch you don't need pin 31. Be aware power on 28 is not constant power, it's controlled by the computer to get power when the switch in...
Last time I checked with physics, neither the proposed $100 mounts nor your more expensive mounts produce ANY light, so I'm not sure how you can claim yours are better ala your video. The biggest determining factor in "light output" will come from whatever light bar we choose to mount.