Plenty of power to hit the merge at speed. If not, step on the go pedal and it will down shift.
The entire point of 10 gears is so they dont HAVE to be used sequentially. The computer is way smarter then you and will make the truck work all in the name of efficiency and driveability.
And here I was thinking that 7+3OD gears was to keep me in the power band and allow for optimum gear selection to deliver that 510 pound feet of torque to the ground. ;-)
One of my biggest gripes with the truck is the lazy programming in the impossible to alter default drive mode of normal. I have a late ’16 build Rap, and even though it was held for extra q/a, that as delivered programming would not downshift over 40 mph unless you floored it. Lucille would bitterly cling to a way too high gear worse than Obama and his henchmen clinging to the ‘Benghazi attack was caused by a video’ lie.
I asked twice to get the computer flashed to newer programming and that made it significantly better- more willing to downshift, no having to floor it to compel a downshift, etc.
I’ve also noticed that their “adaptive shift strategy” seems to only be a transient condition, with the strategy gradually migrating back to hold those gears as long as possible even though the driver obviously wants to go faster. I get they want good economy, but I really, really dislike normal drive mode... without a pedal commander.