Gold farm woes (Bedrock)

Decided to build a gold farm in my base got everythjng set up. Both portals 21x21, snow buckets for max speed, shut off switches for the observers and another to ensure the portals are off when the machine turns off. I also got the trident killer and item sorter set up... and to top it off, I have built this thing at least 10 times now... I know it like the back of my hand...

Turned it on for a quick test... runs perfect everything is working as it should... but I dont see piglins, not a single one. I checked to make sure the portal was aligned right, everything should be working. But apparently building your portal starting at Y -6 will prevent piglins from spawning... after doing my research I found out you have to build then above Y 0 or piglins dont spawn from.the portal...

So now I have around 90 blocks of Obsidian and a redstone contraption to remove and replace 6 blocks higher... 😭