Very weak tritium - TruGlo Brite-Site TFX Pro Sight Set For CZ 75 Series

I was excited by the good reviews so I ordered a set. These arrived end of March. Unfortunately it was mid May before I had a chance to open the package and mount them. The tritium is so weak that these would be useless unless you had been sitting in a fully dark room for a while and that's not realistic for most night time defense situations. I assume the sights I received must have been aged stock with decayed tritium. Since it's past the 30 day OP return date I'll be taking it up with the manufacturer since these supposedly have a 12 year warranty. I've had many other tritium sights on other firearms which were far better. A big disappointment..