Prelude airbag question

[cheajack]

I just purchased a Prelude sans air bags and ordered a set from Pyranha. Aside from being spendy ($80 each) they don't seem very user friendly regarding inflation. These bags have a large bung welded in the bag with a plastic threaded screw in the fill hole. I wouldn't have thought of options except that there is a picture of a Prelude in the newest Paddler mag that has fill tubes for inflation by good old lung power just like Voyageur or NRS bags). They seem to be the same color at least of the factory bags. I guess they could be NRS bags instead. My question is two fold: 1) Is there some inflation tube availabe that fits into the threaded hole now occupied by the plastic screw and 2) if not, how do other Prelude paddlers manage regulating bag inflation (air is gonna shrink like everything else in response to cold water immersion) on the river without losing the plastic screw?
Thanks, Jack

[philcanoe]

sounds like same bags in my spanish fly, they are really durable..,the
longest lasting bags i've ever used..same pair, no leaks, five years

I just undo the screw and blow like h-e-l-l...becareful with the screw plug..
talked with a friend would said his popped off, and into the river as he
was loosening it...bad move...shortly after I almost did the same.
keep a grip on it.

I usually do not add air, as I will just have to let it back out at the end
of day...

[bathtuboy]

I think I have the same bags in my prelude as well and they have been really good and durable, 3 years form mine now with no problems. I very rarely feel the need to reinflate them on the river, maybe just the first stop on a cold river/hot day combo.

Jon