I have 3 predators in my shop at this time. None of them binds up when holding the action vertical.
There are many custom actions that are better than Predators. They all cost nearly twice as much. BAT, Farley, Rimrock, Stolle, Phoenix Machine, Hall, RFD and Meyer are all excellent actions and, the price reflects that. The beauty of the predator is, that you get a custom action for a semi-custom action price.