Tikka pillar length

[HighUintas]

Hey y'all, I am getting a used new factory walnut stock for my Tikka. Even though I pillar and epoxy bedded my laminate Boyd's stock, the stock cracked just behind each action screw hole! I had it at 65inlbs... I guess the pillars didn't do their job.

I have a set of Pete's pillars on hand, but I don't remember what pillar length I'm supposed to have for front and back. Does anyone know the correct length?