my magnets came loose and one got broke, well kinda big chip off a corner, can i glue this back in? if i understand right only 86 and 87 will interchange? and how do i know how to position them, all my magnets are loose ? motor uses these for ignition timing? can i use a regular 16x1.5 metric bolt to remove the flywheel? my starter clutch is bad too

 

any ideas?