Greetings airgunners! I just got a WA Sidewinder in 30 cal but its not producing the foot/lbs I expected. I got it from the factory with the regulator pressure preset at 170 bar. This seems rather high but i didn't make any reg adjustments. When I loaded it up with 44.75gr JSBs I got 430 fps with the lowest power setting and maxed out at only 850 fps. That's only around 70 FPE. I hesitate to go do more reg tweaking because usually at 170 bar my other guns are doing in excess of 900 fps with the same pellets. Any suggestions what else can I look at. I've heard the Sidewinders are not the quietest but mine sounds loud even wearing ear plugs. I've also noticed the noise is coming from the magazine port and I can feel air rush everytime it fires. Is this normal for this gun? Any advise from Sidewinder owners will be much appreciated. I'm not in a location where I can conveniently send the gun back so I'm trying to see if I can troubleshoot and fix it myself. Thanks in advance folks!