I agree with Form. Your height above the stock matches an unseated lug. It would be a pretty large inletting error for the pocket to be cut that shallow and the lug would be very obviously high just on visual inspection.There is definitely something going on with my Rokstock. It appears the recoil lug sits too high up in the slot causing the action to sit up on the lug. There is a dramatic difference in how the action sits in the stock with the recoil lug versus without. No amount of adjusting would let the action drop all the way in when the recoil lug was installed. I tried a factory recoil lug and there was no difference.
Until you get use to it, it is a pain to seat them, and like most things, once you get it a few times it gets easier.