Tuning Leshiy Classic..Pressure Release Ball..

I bet that it leaks from EDMU... 

Put a balloon over the edmu and see if it fills up. Seems to be the go to test

I'm the guy from the the thread you bumped on the main PCP forum. 

For what it is worth, my chunk of o-ring repair is still holding. It was an easy to find leak with soapy water.

The secondary bleed screw is under the cover. It is not the stop screw for the cover.

The ball that indexes the fill cover does like to fly out. Let me see if I have any pictures & I'll post back. 

No pictures but the ball & spring are in-line with the stop screw.

So once you loosen the butt stock & remove the stop pin you can slowly slide the fill cover back (meaning towards the gauge) & expose the ball. 

I slide the collar back with the stop pin pointed towards a thick, folded towel & have it catch the ball. Then shake the spring out if it doesn't fall out.

Edit...

I don't mean with the stop pin pointed at the towel since it would be removed at this point. I meant the hole where the stop pin was. 

Edit over...

Putting the ball back in has given me more trouble. I hold the ball down with tweezers or a pick & slide the collar back over it.

I mark the location of the indexing slots on the cover so you're at least close when sliding the cover back on. Usually a dot on a piece of tape.

My Leshiy 1 came with slow leaking because of missing the small o-ring between the hole and the gauge ... Put one in, no more leaking ...

Since you haven't had the fill cover off I'm guessing you haven't replaced the fill port o-ring. Worth checking if the bleed screw isn't the source of the leak.

Also, edited my previous reply to clarify a comment I made.

@Scouty I haven’t removed the end of the tube with the fill port yet. 1) The fill port o-ring is the one held in place with a screw facing into the air-tube, correct? 2) Recommendation on how tight the screw needs to be? Too tight air won’t enter..not tight enough and slow leak?

Click to expand...

1) Correct, at least that's how I remember it.

2) I watched the video referenced in the thread below this one.

https://www.airgunnation.com/topic/edgun-leshiy-classic/#post-960600

I didn't actually click on the video embedded in that link but I assume it's the same one. I followed the instructions. I believe something like barely snug and then a 1/4 turn?

If that doesn't appear to be the correct video let me know and I'll find it. Don't follow my advice about the 1/4 turn until you verify. 

It definitely takes a stronger turn on my tank to get the air flowing so I possibly have it a bit tight. But I can fill it and don't have a need to take it back apart and loosen it.

I had to water test mine to figure out where it was coming from, so if it is still leaking, try the water test. Hopefully you got it taken care of. These are awesome guns when they are working as they should be. I love mine.