OK, So I finally found the damn PTBs at stop and shop. Problem is, I was having a flooding issue. 
Here's what I did:
Did the PTB mod and also the four cuts modification. BUT, I cut the PTB shorter and stuffed the top with a thin layer of poly fiber. This allows me to fill the cart with 10 drops (stopped there) and not get the gurgly flood issue. The poly is acting as a dam to feed the atty and the PTB is the resivoir.
Nestran
Here's what I did:
Did the PTB mod and also the four cuts modification. BUT, I cut the PTB shorter and stuffed the top with a thin layer of poly fiber. This allows me to fill the cart with 10 drops (stopped there) and not get the gurgly flood issue. The poly is acting as a dam to feed the atty and the PTB is the resivoir.
Nestran