Stud standout

How much should the magneto housing studs protrude from the engine case?
TIA,
TIA,
The ability to post messages is restricted to LCGB members. Any questions contact us at lcgbadmin@googlemail.com
https://www.ilambretta.co.uk/forum/
https://www.ilambretta.co.uk/forum/viewtopic.php?f=10&t=13041