I had NRS float bags in my Dagger Encore, and they leaked. Several years ago, I’d found a leak around one bag’s dump valve. I removed the valve and put a big patch over it. This worked, but meant only the 0.5" i.d. inflation tube could be used to S-L-O-W-L-Y empty of fill the bag.
This year the other bag was slowly leaking, and turns out it had a bad dump valve, too (pictured). Okay, one is an anomaly, but when both fail in the same manner, something is wrong with the product.
So, I called NRS to complain, but the customer service person cut me short: “Sir, if you are having a problem, just return them and we will replace them.” I did, and yesterday the mail brought two brand new float bags.
NRS stood behind their product, even though it was 5 or more years old. I’ll buy from them again.