The focus still looks a fair way out Paul. This is a shot from an ST 7XME attached to my Orion ED80 using a WO 10:1 focuser. I use the subframe to get as close as I can using the graph, then check the full frame for faint stars and zoom in to see how many pixels they are covering. It can take some time.
(I'm looking forward to getting my SCT on a permanent pier with the motorized focuser
)