Just got my Quest 800X (a .22), and it's got some problems. The bore is off-center (at least in the back), it shoots hard right. With the rear sight cranked almost all the way to the left it's on target, but lining up on the sights like that really feels strange...
There's a bur in the barrel, push a pellet through and you can feel it catch right before the end. The stock is a poor fit, and it's already rubbing the finish off the breach block. And I can't get the scope to focus at 10 yards.
Unfortunately, though, it runs strong and groups well. I'm almost tempted not to send it back. Heaven knows that Crosman has helped me out enough that they don't owe me anything... still, the gun ain't quite right.
Bummer.