TZ has 3 leg holes, not 2 like other pins, the standard leg will cover the highest and lowest cabinet mounting holes no problem no matter what position the legs are mounted in.
I have found that the proper 6.5 inch incline/pitch on the playfield is achieved much easier when the front legs are bolted higher up towards the lock bar.
I tried getting the 6.5 degree pitch using the leg levellers but felt the back levellers were out far more than I was comfortable with, reducing the front height meant I didnt have to extend the leg levellers out to far.
Mounting the front legs higher lowering the front would also make it easier for some short kids to play, nut its a not really a kid easy/play friendly machine.

Gimp