Which two corners?
The passenger Side is a *****, I've done the BBK shorties so tell me what your problem is and I'll walk you through it as best I can.
The top front, I bought a 15 mm wrench and bent it in a vice to work.
Didn't have to bend it much but you can only get maybe a 6th of a turn on it.
Bottom front I used a 3/8 matco flex ratchet with a 15 mm deep well.
I got horror stories you can't dream of on the pass side!