Woodburning

I have been searching high and low for the updated PCV valve for my 5.3, in hopes of helping the oil consumption issue. I have a 2011 Suburban 1500. I believe it already has the updated valve cover. I have been noticing more and more smoking at idle. I have had a compression and leak down test done per the GM procedure, and a couple cylinders are looking bad. I plan to have the cleaning procedure done with the GM upper cylinder cleaner, but first want to try the PCV. I’ve gone to every parts store in town and they either don’t have one, can’t get one, or give me one that doesn’t fit. I am told to buy the fixed orifice valve. Can somebody please point me towards an online retailer, or at least provide the correct part number? thanks!