Saving Old Seagulls

Do I have to deglaze the piston sleeve before assembly, I am using the original rings.

Its a 1970 40+ totally in pieces

No gasket? , the two halves I take it must be very smooth or flat or how does the crank area build a vaccuum if it leaks? Just curious...........

I want to reassemble the crank housing and need to know what to use as a gasket before I mate the two halves together?

Can someone help me with or where to look for an exploded diagram of a 40+ SEAGULL . I want to make sure that I assemble all parts correctly and nothing is missing.

I removed the flywheel by the suggested method of knocking hard on the dome nut, but as the flywheel came off, the whole centre bit cracked. Does somebody have a flywheel I could purchase for a 40+ ( FP I826GO ).

I am searching for a list of BSF bolt/stud sizes to replace all in my 40+.Any suggestions?

If I prime the aluminium engine parts with zinc chromate, will it adhere to them, or is there another product that I could use as a suitable primer?

I am in the process of stripping and restoring a 40+ FP I826G0. I want to clean the brass mounting bracket. It is green/blue coloured from corrosion. What can I use to clean it to bring it back to a nice shine?

I also want to know what chemical to use to clean the power head and crank housing ...