Look, I'm all but a total newb to snowboarding, but the same principles apply to anything you can buy and the products you use. The same company can churn out a poor product and at the same time put out a fantastic one. Yes, they do their best to at every price point and consistently over the years, but design, engineering, production cost and a lot of other influences come into play. You said you have some brand new bindings you've yet to use... did you buy them to sit around or just so you could post on an internet forum that you own them? Of course not. Is an aging binding failing? Just not feelin' good about last year's bindings after you gave them a decent chance? You have a selection at your fingertips. Use
it. Sell what you don't like or want to recoup some costs and move on. I dunno', if last year's bindings were flawless, but they've failed you this year, I'm thinking it's something else. Did you change your boots, change your riding habits, do any maintenance or disassembly/reassembly? Lots of things it could be other than the manufacturer of the product. And if it is the product, use a different one. It's not rocket surgery.
FWIW...YMMV...my two cents