Originally Posted by REB
from what fingers was saying, I understand it as; it is not necessary to have the bladder air valve tip coming thru the hole. Just have the bladder lined up to the hole in order get the needle in. Whether or not the valve is inside or outside the bag. Sounds comparable to a plumbing trick you would learn from an "Old Plumber" to make it easy and work. ( not saying that fingers is old
...Yap, I stopped using rubber cement awhile back, I just do the same thing Fingers does...