Very common that, the upside is at least you can twiddle it to adjust the rotation looking down the barrel by eye.
It is common to get leaks if the hop is sitting forward, or the nozzle is too short/has damage on the tip.
One thing to check is looking up the feed tube is if the feedlips are visible, usually you're looking for too much protrusion as a cause of feeding issues but if there's too little then the feed lips are too short (admittedly unlikely for a ml bucking) or the barrel is sitting forward which can happen depending on where the cuts for the c clip line up with the c clip and the hop.
If you're on 7.4v then that doesnt sound likely, although on 11.1 you might be nearing that territory.
Light pme tends to manifest as a drop in fps on auto but not semi so probably not the issue here.