Maybe thats the difference? I use 60/40 juice and get great wicking with the up from bottom style juice flow
The biggest advantage to me is how easy it is
I use horizontal coils, I pass the wick through and just lay the ends on the deck.
Just as easy as wicking a dripper
With a juice Chanel style deck I find it can be hard to get it right, too much or not enough cotton in the Chanel & it dry hits or floods
I guess I'm lucky that PG don't adversely affect me, I love how 60/40 brings out the flavour and will probably stay at 60/40
I think if i had problems with Pg and had to use Max VG I would try to thin out the juice with distilled water?