Crankshaft Cog good, but not tight - replace?

[Mizamook]

It is alive! I think the engine sounds fine ... all the bits are buttoned up, and it runs at least as good as it did before I started.

Now on to things like ... details.

Messing with the new TPS now has error 12, but after reading I realize I can't set it up right without vacuum pump, so ... either I guess, or .. hey! I'll read the FixKick treatise on the subject and see if I can learn something ...