Not to insult anyone but i find this all funny!
1ST: cock the hammer back with the bolt, then gas up your marker. (If no air then just remove the bolt...)
2ND: now that the bolt is removed marker is now gased up, put your finger into the breech and fire the marker! ( Not rocket science! ) LMFAO, if the sensor is not reading you can buy new ones to drop in.
3RD: remove the sensor cover, and carefully take the sensor block out of the gun body BE CAREFUL the little film might fly out and away! Now you have 2 options here, either clean the film you have or replace it. My choice is to take it out completely, it reads alot better! LOL!
4TH: cross your fingers and good luck!
Team M I A Sponsored by 2ND II NONE SPORTZ