Bummer.
I wouldn't recommend more than ~2 degrees of camber in a car that's daily driven, on either axle.
There are other degrees of freedom for fore/aft balancing of a car which should probably be tuned before going maxxxx camber (e.g. springs, suspension bushings, bars, application of trail...
So happy that people are using those vorshlag plates!
Regarding 2nd gear popout, if you still have a shift weight and/or heavy shift knob, take it off.