I drilled 2 of the original Guru's one pin down (45 x 5-9/16 x 70) and one pin up (45 x 5-7/8 x 40). I drilled the new Guru Mighty pin down (same as above) and have been very impressed at how well it compliments both of the Guru's. This past Friday I used all 3 of them P.D. Guru game 1, P.U. Guru game 2, and Guru Mighty game 3. The pair started off pretty tight and then slowly opened up was the reasoning for using all 3 of them.