Gas tanks curing in the sun

BARNEY’S JOURNAL

November 05, 2007: Top end gasket set

My top end gasket set arrived... from Japan, to Texas, to Norway, to New Jersey!
Now is it the right set? Do I have enough of and the right kind of gaskets?

This is what I received, part numbers added by me :-)

Does any one know the answer to the following questions, before I behead Barney and find that I have the wrong gaskets or not enough little o-rings, etc.?

I may even have some of these numbers wrong. I "interpreted" the parts list as best as possible matching by size, shape, position and material.

Is 12251-028-020 the copper head gasket I have (no notches) and is that the one for the head and cylinder I have?

Is the 91301-028-000 O-ring the one for the intake port? And is that the number for this part?

Is 12901-028-020 the part number for my engine, and is this the Gasket "A"? And should it be quite "firm" almost hard?

Is 12902-028-020 the part number for my engine, and is this the Gasket "B"? That is, is "A" the case-cylinder chain gasket and "B" the cylinder-head chain gasket?

Is 16201-028-000 the intake port gasket I "re-manufactured" in Intake pipe gasketing of March 31?

Is 91305-028-000 the o-ring for the oil stud at the head-head cover joint? And do I need more than one?

Is 90442-028-000 the flat(?) washer that goes under the acorn nut? I ask, since as you remember, I had no acorn nut, and lockwashers under each stud nut.

And last, what is the '??' gasket for, that is a symmetrical version of the 16201-028-000 gasket? Is it a second head-intake pipe gasket, in addition to the O ring?