The pins suck - TacFire 5.56 and .308 Upper Vise Block

The block worked as it should, but the pins detent ball & springs both flew out. The first one popped out when I opened the package and pulled the pin out of the block for the first time, the second when I pulled my upper out of it the first time. Of course it still works, but the pins fall out easily which means my upper can fall easily. Ill have to go shopping for new pins