VL12 Cartridge alignment

Did anyone have to use a protractor for correct alignment and if so which one.

http://www.denondjforum.com/t/finally-now-they-are-here-lets-chat-about-them/7801/4

I used this Sleeve City Baerwald cartridge alignment tool. The reflective mirror surface allows you to really see how well the catridge body and stylus align with the grid markings.