here is a photo I grid marked, please tell me where I should start digging to find the PCV. I suspect it may be hidden under something else too.
You can pinpoint it with tenths if u want eg: C4 (where C crosses 4 ) or B.3 x 4.5 (where B and a third crosses 4 and a half)
Hope I am at the correct end of the block ....... thanks.
photo here: