Question 68 automag double firing

[Tomford]

Ive purchased a micro mag. After stripping and cleaning the gun and gassing it up for the first time, its been firing twice, once on the trigger pull and once on the trigger release. It doesn't happen everytime but about every 3rd of 4th shot. Theres no apparent leaks and the velocity is ok. I've tried numerous things to correct the situation but become stuck, and now after playing last week, my current 68 automag is displaying the same symptoms.
What can i do to rectify this?
Nothings been changed on the marker and has operated fine for the last year.
Is there a direct cause to this fault?
Any help would greatly appreciated.
Thanx

[xen_100]

classic valve or RT?

does it still have the stock trigger frame?

sear is not chipped or worn at all?

bolt is not worn?

[�?�� �m���]

heh heh response frame would be awesome if it wa, yea like xen said check your sear where its suppose to catch your bolt

[Tomford]

Sorry i didn't reply sooner...i havn't got access to computer at home.
The 2 mags in question are classic mags. With standard grip frames and double triggers, they've been fitted with a top hat valve.
The bolts on both markers are fine, but not sure about the sear's. Gonna get some ordered and try them out and i'll post my results in the next few weeks.

Thanks

Tomford