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Frank, a couple of things..
The exposure is far too high....work from the lowest you have - I use around 1/150s for my set up ( double stacked SM60+ED80) and 1/20s for the proms.
The edge blur I think is the ghost from the etalon made more obvious due to the over exposure.
Tuning the SM40 is a fine art...concentrate on getting the edge in as tight a focus as you can then use the tuning ring to get the best surface detail visible then tweek the focus again. I had to add a SW electronic focus motor to my ED80 to get good results.
The good news is that you will succeed! just a bit more practise, practise...
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