dmccrerey 0 Posted June 14, 2012 Report Share Posted June 14, 2012 I recently converted a S-20 that produced a strange cycling issue. As for the gas system all I did was increase the three gas ports to 3/32. Because slide was only opening 3/4 of range. I decided it was under gased. The Slide, bolt, and bolt head move smooth as glass. But the gun will only cycle properly (w/o FTE/FTE) when the gas system valve is in the #1 position (colsed position). Not a problem, just strange. Thinking it may be over gassed, I have tried the adjustable V plug, MD valves they will not work in any position. I hate being a profectionest, I keep trying to fix things that are not broke. I would like your thoughts Dave Quote Link to post Share on other sites
mavereq 4 Posted June 14, 2012 Report Share Posted June 14, 2012 i would think it would cycle well being overgassed but would beat up the piston rod and the back of the trunnion a bit. i'm sure someone with more experience will chime in. Quote Link to post Share on other sites
dmccrerey 0 Posted June 14, 2012 Author Report Share Posted June 14, 2012 (edited) thats what I would think. But felt recoil feels the same in #1 and #2 position. And at this time there is no damage appearing anywhere to think it is over gased. Runs like a timex. I only have 300 round thru it right now. Will see if things change after 500. I really don't think thats the problem tho. Edited June 14, 2012 by dmccrerey Quote Link to post Share on other sites
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