I just received the 2QZQ zipper Mod #3 to my HH ULBA and am thoroughly satisfied. The workmanship is excellent, the price was very reasonable and customer service was flawless. I recently added the HH Supershelter to my setup and the zipper mod makes getting in and out with the SS in place a piece of cake, unlike struggling in and out of the bottom entry with the undercover and OCF pad installed.

I highly recommend you have 2QZQ add one of their excellent mods to your HH if you have not already done so.