It arrived last week, but I would rather not go through a return on AliExpress.
There might be a slight channel imbalance, but I find if I change the insertion depth on one side, it’ll sound mostly balanced.
Oh but more importantly, I didn’t know you could change the filter on the Aful P5 
Does anyone have a link to a suitable filter installation tools/filter-kit? (Or know where I could look to find one?)