I recently picked a Gnr that was used for picking. Replaced most missing items. Last thing is the trap door assembly. I have ordered a new coil. I'm missing the coil sleeve(unless it comes with the coil) I have the plunger pin but it broke where the roll pin attaches to the linkage. I am also missing the linkage clamp btw the door and the coil plunger. These parts I am unable to find online. Was thinking of machining my own. Anyone been down this street before?