Umarex Airsaber 2x won’t fill

When you shut it down and off after reaching 560 do you hear any leaks also is the compressor newer or older as it sounds like the Hpa side possible rings worn or a miss alignment in them . ( I have not seen the schematics on the umarex compressor ) or an obstruction in the flow I am just guessing here for some Idea to try to assist until a more knowledgeable individual shows up to help .
 
Well just incase and I hope it is just something simple .

Piston replacement .

Edited to add the other videos .


found these at umarex as well

I found this video before you mentioned it was newer or unused . I am sure a few operation videos may assist you if you have not watched them yet and if you have Then I apologize and hope someone with some real knowledge that owns one shows up here for you lol . ;)(y)

===edited again ===

I did a search here and read through some and found 2 similar instances but nothing specific you may want to look around in these as well for something to kill time haha .


search results here on AGN
 
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Don’t know what to do about it any suggestions?
More info about what. You've tried and what it does and doesn't do would help. If it won't go past 580 it sounds like the compressor may have suffered a stage failure or a valve is leaking or stuck. Reed/check or otherwise. If the compressor is totally unused like I just read, there's a bit of a learning curve and some scientific method in order