Welllll i have spent an insanely large amount of money on my 81 to fix a charging problem, finally think i have that handled, well i thought, i installed a fourth alt. rotor (mikesxs) but somehow it wasnt on fully andit chewed up the black box at 12o clock on my stator housing and also melted plastic on the black thing and left some melted plastic on my rotor...cleaned that all up by sanding with fine fine sandpaper to a new shiny luster...i also did the same to the black thing, i believe thay controls my spark.... Put everythong back together and now the bike wont run...it cranks, not no fire..i believe that black thing is the culprit cuz it didnt look so good before i cleaned it..i dont kno the name of that black box thing or where to get one and im not about to drop 200 dollars for the third time on another stator( i forgot to mention ive replaced that twice now) just to get that one piece..sorry if ur lost cuz like i said my problem is just to complicated to type out and im sure i left info out....im not looking for someone to chit chat with over the phone, just someone who knows what theyre talking about and would be able to tell me whst that part is and where to get one