I talk to Dick Boyer yesterday and I told him a block was being sent to me to probe it out and I would not post the the results on the forums but would email him my findings and to the shop that is sending the block.
And by his response he seemd very interested in what I find as far as loctions and lifter bore angles ETC.
Again I have never seen a PBM block yet and I am pretty sure Wheeler is doing the machine work to the blocks and that is only here say but I have been told by enough high up people in this industry that know whats going on.