Hi all, <br /><br />I've got a 100ESL70 100HP V4 Johnson outboard.<br /><br />I just added a tmp guage to the unit, and while trying to get a headbolt out so I could stick a bracket under it, I snapped a headbolt. (no I wasn't accidently tightning it, It just snapped.)<br /><br />The bolts shank...