Edgun r3m help

[DeadEyeDill]

I got my new to me edgun r3m today and it's a damn awesome gun.
I've already shot probably 1 tin of mk11s already and was doing great. Then all of a sudden when I push the bolt forward it made a noise and then all the air drained out of the breach and muzzle!
I dont know much about these guns yet and any help to figure out what happened would be much appreciated! 
I'm guessing is a oring but I'm not sure. I just wanted to ask before I started taking it apart

 

[JWilson]

Take off the breech block and look at where hammer contacts valve rod. Push the hammer forward and see how much valve spring tension is present. Sounds like a valve problem... maybe snapped valve stem.

 

[RomeoAlfa]

I agree that it sounds like a broken valve stem.

 

[DeadEyeDill]

I'm gonna have to agree.
I took the breach block off and the valve stem was sticking out about an inch

 

[JWilson]

Brian sells replacement stems. It’s an easy fix. New stems are a slight redesign and seem much more reliable.

 

[DeadEyeDill]

Well just so happens the guy that sold me the rifle is a very stand up guy and he goes by the name kiba.
he told me will send one out to me so that pretty sweet.
It's not the place to say but Kiba has the best person to deal with that I've come across yet.
Very nice person and doesn't mind answering questions. Also has been a big help with this rifle.

 

[JWilson]

Make sure when you reassemble you use a brass ring seal at the transfer port. Some of the R3Ms came with rubber orings at the transfer port. The brass ring offers way better efficiency.

 

[Hynzie]

ITS GOOD TO HERE U GONNA GET IT STRAIGHTENED OUT AND GREAT TO HEAR THERESMORE GREAT QUALITY PEOPLE WHO ARE IN THE AIR GUN WORLD

 

[Jlacouturec]

cock the bolt back and fill with air and dont let preassure decrease to much...... thats all

 

[DeadEyeDill]

"Jlacouturec"cock the bolt back and fill with air and dont let preassure decrease to much...... thats all

I dont think that would help this much.