Pneumatics Extend Automatically

[Joshua May]

Sorry, I dont have the time to search before this post, so please excuse me. I'm right here in the middle of the Las Vegas Regional and we have match in a few minutes, but there's a problem. Everytime we turn the robot on, arm piston extends automatically. We've checked the programming, and nothing comes up to make it seem like this is the problem, so we think its the tubing arrangement.

we have a single solenoid that is black and grey (dont know the company set up like this:

Exhaust | From tank | Stop
To Piston | To Piston

If anyone knows the answer can we PLEASE get a quick response, not much time!

EDIT: We took out the stop, but now we can't retract the piston, answer please?