Good you got the valve cover gasket. Only problem I had with valve adjustment on my Vespa 150 was when I reused the cover gasket and got a oil leak. Just a drop or so after riding, but annoying.
Art
Yeah - learned the hard way!
It is awkward to fit the valve cover back down in there - and that gasket slipped out of place, underneath.. I ran the engine then wiped under there and found a leak.
After that I buttered the gasket pretty good with some grease to 'glue' it in place
I can't tolerate an oil seep!
My fav goof was the time I left a paper towel laying under the valve cover of the LIKE! (catch bit of oil when valve cover removed) Finished the valves, buttoned it up.
Went for a 3 mile ride to the reservoir. Switched off and smelled toasted paper!
"the day I tried, unsuccessfully, to set fire to my scooter...."
Stig