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Umerax Hpa adapter problems

Umerax Quality Control?
Solutions of Hpa conversion for an Air Javelin.
Please, this is not a flame and not starting drama. I just need other experiences with Hpa adapter.

After multiple attempts to mount the Hpa adapter onto an Air Javelin the adapter shifts position over 2 mm left to right, and there is a gap of 1.036mm between adapter and rifle, you can physically see through the gap.
Is this gap normal? Is this much movement of adapter and PCP bottle normal? Is it safe to shoot or try something different? At 3000 psi I'm a little reluctant to just go and try it.
I was told that Umerax QC tried multiple units off the shelf and all of them do that, and all was OK. I'm still a little worried


air w gap.jpg




gap.jpg
 
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