Does it have an adjustable center pin? I checked the box it came in and did not find an instruction manual, and I also checked google. When I fired it up the other day it caused the bottom of the center pin, where it connects to the top of the screw chamber, to heat up instead of the coils (and that's when I noticed the center pin was completely loose) so then I spun it around in a clockwise circle with ceramic tweezers and it felt like it tightened (hoping so) & now it seems to be hitting as expected again. If it's not adjustable, if someone could shoot me a video or guide on how to build on a Freakshow with only three pins, that would be a great bonus.