410v3 Rear toe or antisquat? Loose rearend

[Chris119]

Hey guys I have searched and can not seem to find info. My old 410 (2010) was dialed but have never got the same performance out of the V3. I have tried different diff fluids but the rear end is really loose on power.
I cant seem to find out how to change the toe on the v3. Is it only by replacing hubs? I have +1 on there Im also at 2deg of antisquat. would going to 3 make that noticeable of a diff?
Any help would be appreciated. lol Im faster with my 13.5 2wd.

(Clay track low-med grip)

Thanks