Hi,

Thanks, Todd. I thought I did mention the problem, but it's probably my mistake. In this case, I squeezed the subsequent tubes from the gun without the mixing tip on after the first one did what it did. I thought it might have been my gun, so I used a different gun with the same result. I chalked it up to a bad batch. It was the strangest thing, though....as I squeezed the gun, you could actually see one side pushing through, but the other not. If I had been thinking better, I'd have squeezed the uneven volumes into something I could have saved the glue with (for hand-mixing).

I use the tips almost exclusively. For me, they're half the point of using this adhesive. Tack stuff in place, then caulk a bead around it and fillet it in with a gloved finger. If it's for a small application where it's not worth losing the glue stuck in the tip (although I freeze the tip and get a day's stay out of it), then I mix it with a stick.