Wildcat help

I have a wildcat mk2...huma reg....the m12 dowty seal on the bottle was leaking...i dumped all the air...unscrewed the airtube and replaced the seal and refilled to 230 bar...checked for leaks and no leaks...but now the gun has no power...like it barely shoots...100 fps probably....what in the same hell happened...i dont get it...i put this reg in last week set on 145 bar and it was a laser beam...did it go out...or blow out something
 
The position of the pellet probe on FX Wildcats have to be exactly right. Correct positioning is crucial. When removing the air cylinder it is easy to reassemble the airgun where the pellet probe is not in proper alignment with the barrel’s transfer port. I used to do this all the time by mistake until I learned and now I made a tiny mark on my pellet probe so I make sure it is aligned deep enough to properly reach the transfer port. You may just need to loosen your air cylinder brackets again and move the assembly forward or back to get it properly aligned. I believe you’re inadvertently reducing your transfer port hole size and that is why you see the reduction in power. Pellet probe and transfer port alignment is your issue. I’d almost put money on it.