Temperatures when I get out to shoot have been hitting 10-15 celcius,,,

And damn my friend for using my remote in the past. He installed the reg on it because he broke his remote putting it on there... >.<

If I just crank the inline stab wide open, does it still regulate at all? I'm not quite sure how they function.

And yes, when I watch the gauge it goes from like, 750-550-750-550-740-540-730-530 etc, right at time of shot, then back up, then down. So it slowly works its way down. (At a rate of 12BPS)

What gets me though, is I can still /fire/ the marker at 300 PSI. It recocks just fine, just that it won't feed a ball. But if I full auto at 300 PSI, it does uncock occasionally too. Thats what had me confused, because otherwise I'd be like 'recharge! of course!' (Though I'm still pretty sure thats the case)