Just another Gen 2 Exhaust Drone driving me nuts.

I know this topic has been beat to death, but after searching here I can't seem to find a good solution. Earlier this year I picked up a low mile 2018 SR5 5.7 Crew Cab. Not my first Toyota, but my first Tundra. Anyway, the first owner ran straight duals, side exhaust, NO muffler or resonators. Much too loud for my taste, so I added a Borla XS (because they don't make a dual in/dual out touring muffler, which is what I wanted after running it on my 18 Sierra, LS4).
After the Borla was welded in, the idle is as good as it gets, but under acceleration in any gear the drone is LOUD.
So, after a couple of months running the Borla, hoping it would improve or I would grow to like it, I welded in 2 new stainless 10" resonators forward of the muffler. This helped lower the overall DB of the system, but the annoying drone remained. I have no idea what the original dual setup is, but appears to be a decent fab job done by someone with experience.
I don't want to start over with an entirely new setup. I think it may have helped to weld in those resonators downstream of the Borla, closer to the tips.

Before I made any more foolish mistakes to this frankenstein exhaust, I'd like to hear some feedback/recommendations to deal with this annoying drone? The simplest step would be either a "H" pipe downstream of muffler, or possibly a couple more resonators several inches inboard of the tips.

I only found out about Dirty Deed's setup long after all of the current work was done. Like I said, the tone at idle and from outside the truck is outstanding, but at this point I don't care if I have to sacrifice the overall to get rid of the drone.

Thanks in advance! 308plinker

 

You can have some 26-31 inch Hemholtz resonators made for just after your mufflers
@dirtydeeds

https://www.tundras.com/threads/new-dirty-deeds-bamuffler-installed.9607/