maybe a job for you tomorrow then while your out swing buy and grab some correct paper or a shop and pick up some head n base gaskets .
in all the rush maybe you broke a ring fitting the piston back in rings didnt look too good anyway . if you fitted a known good carb and it still does same thing then its internal
as i said if you get a leak from base gasket or anywhere it wont run or run so badly you wish it didnt take your time , look at things a lot harder , relax and enjoy it .
good to learn yes , but better to learn to do it right 1st time and not rush it mate
some 20' over rings and some new gaskets maybe a bottom seal too now you know how to get at it and should be allgood
