Pro sport f*+% up help

[Daveo]

Mr tinbum has just talked me through how to decock the gun using the anti bear trap without me losing a thumb !!
and explained what's caused the issue.
I would like to say a big thank you to tinbum for taking the time to get me sorted.
Good man

[stublade]

Same happened to me but a just wrapped a big towel around it and pressed down on the floor and let it go .....not as much tension as I thought it was going to be

[bighit]

Mr tinbum has just talked me through how to decock the gun using the anti bear trap without me losing a thumb !!
and explained what's caused the issue.
I would like to say a big thank you to tinbum for taking the time to get me sorted.
Good man

Top guy is Tinbum.

[rlancast]

Nick helped me sort my ps with this exact problem earlier this year. Top Man tinbum 😊

[Phil Russell]

Nick helped me sort my ps with this exact problem earlier this year. Top Man tinbum 😊

So, pray, what was the solution?
It would be nice to record it here so that any other person suffering the same ill and doing a search will find the remedy?

Cheers, Phil

[tinbum]

Thanks Dave, it was a good to talk to you.

Phil, it was the flange on the rear guide causing the issue, and the use of the little known abt button that fixed it.

[Daveo]

Right bit of an update.
I reduced the depth of the flange on the guide where it sits against the trigger block from 4.5 MM. To 3mm
As suggested by tinbum
I haven't fitted any preload to the mainspring until I've tested the power.
The gun cocks and fires much nicer than it did the twang as gone.
I put 20 pellets through the gun last night not once did the safety catch engage.
I'm aware pro sports can need some extra force to engage the safety
In the past if the safety didn't engage the gun wouldn't fire and it had to be re cocked.
But now it does fire.
Any ideas?

[tinbum]

Right bit of an update.
I reduced the depth of the flange on the guide where it sits against the trigger block from 4.5 MM. To 3mm
As suggested by tinbum
I haven't fitted any preload to the mainspring until I've tested the power.
The gun cocks and fires much nicer than it did the twang as gone.
I put 20 pellets through the gun last night not once did the safety catch engage.
I'm aware pro sports can need some extra force to engage the safety
In the past if the safety didn't engage the gun wouldn't fire and it had to be re cocked.
But now it does fire.
Any ideas?

It sounds like the piston isn't coming back quite far enough. Again this could be the flange, maybe take it to 2.9mm to be sure?