And I'd try to avoid sealants (threebond) on your paper clutch cover gaskets. A smear of grease will hold them in place and if you grease both sides they should swell a little and seal better
I am with you there Paulos,,,,covers are called "Covers" for a reason,,,"Quickly removed whilst engine still in the bike for servicing,,,I totally loathe crap like Z bond on frequent "Non Total Overhaul areas",,,,may as well weld your counter sprocket on