The story ends like this . . .

I couldn't bear to convert the Miyata because I don't
want to drag a 52-tooth chain ring around on a single-speed
and I want to keep the Miyata as is to go fast with said
dinner-plate sized ring. I'm selling my SOMA to make room
for a screaming deal I got on a like-new SOMA rush.

Thanks for all the feedback. Just for the record the Miyata
is a great bike for the prices they go for now--get one if ya
see one.