TRX4 Torque Twist Question

[smc-93]

I recently decided to convert my Bronco to a scale trail truck, rather than going for a crawler build. Part of that change is installing the SSD portal delete kits, but in doing so, I've introduce more torque twist and less gear reduction. My question is, is there a way I can control/eliminate this torque twist? I'm not opposed to changing electronics if necessary, as I plan on buying a TRX6 that my current electronics can go into.(9/45 spur and pinion, Traxxas UD and OD gears, 10wt oil all around, stock .46 rate springs all around, Holmes Hobbies Puller Pro BL 3500kv and Holmes Hobbies Trailmaster BLE Pro) Any advice would be appreciated, thanks in advance.
https://imgur.com/a/iF8yqEL

[Greatscott]

Stiffen up your back suspension, go with 60wt or higher shock oil.

[smc-93]

Do I really need to go from 10 all the way to 60? Do I only to do it on the side the truck is twisting (left side) or both rear shocks? For the most part I like the way it drives with 10 all the way around. At the moment, I only have 20,30,40 and 70. I might have to give to 40 a try.

[OSRC]

Try some underdrive gears out back, really helped mine.

Also, I "outboarded" my rear shocks at the axle mounts with some 5mm spacers and longer screws. Put the shocks at an angle and cuts down on the twist.

I had a little bit of TT after these mods, but noticeably less than I started with.

[smc-93]

I already have underdrive in my rear axle (plus overdrive in the front, might negate the effect of under driving the rear), haven't tried putting my shocks at a angle. I might try stiffer springs in the rear. OSRC, are the things you've done with your truck with or with the portal deletes?