You could lower the PSI in your front by 5lbs and see if that helps with energy transfer to the grips. You can also raise your bars with a Delta stem riser. You'll get about 2 inches, any higher and you'll probably need to install new longer cables and housing.
https://amzn.to/3FQM5FW
Thanks, I ordered the extender immediately.
I'm running 30 psi. The Radrunner manual says you must keep the tires at the pressure on the sidewalls, without saying what that pressure is. It took me a year to find it on the sidewall because the white decoration was applied over it.
I was running 20 or 25, but the rolling resistance is wonderfully low at 30. That's what made me prefer pedaling.
It reminds me of Frank Bowden. In 1887, he'd made a fortune, when the doctor told him he had six months to live at 39. He suggested bicycling. Bowden bought a Raleigh at a London shop because it was much better than anything else he'd seen. Raleigh was a 7-man shop in Nottingham. He loved it so much that he toured France, Italy, and England, and his health sprang back. He bought the factory and expanded it so others could afford the sport he loved.
In the days of solid tires and unpaved roads, touring three countries by bicycle was amazing. Raleigh was producing Kangaroos, but this must have been a Rover, built under license. The quadriceps is the longest, heaviest, most powerful muscle in the body, and moving the seat aft lets you use it much better. It also lets your legs absorb bumps.
(...except those longitudinal jolts, where the sudden acceleration up causes a sudden jolt aft. I think bumps 2" high are common on local streets. By golly, I'll get my laser level and measure!)