Friggin pinion nut not breaking loose....

I bought one of those flat plates that bolts to the yoke.

Ratech 18001 Differential Tool Pinion Yoke Holder Tool | eBay
Broke my 40 year old craftsman 1/2" breaker bar.

Went 3/4!

2 x 3/4 breaker bars and 2 x 2 foot cheater bars and it came loose.