One would think with your suet cake right on the tree like you have it the pileated would jump on it.
Nice pictures!
Well, I'm not saying they've never hit one of the suet cakes, but in the past 20 years neither the wife or I have observed them doing so. Maybe if the suet cakes were at least 20 ft. up the tree? They are very cautious customers - the "seldom seen".