Ok quick question about the s/b. I have been using it awhile and it just started misfiring. I tried pulling up the center pin, i check the insulator in the connector, everything looked ok. It worked some but didnt fire more often then not. I tore the head apart ripped all the glue out wiggled things a bit then put it all back in and it all works again. First real question is what do you guys think was wrong? And two does it really need glued again, and if so just regular old hot glue?