Well, Thank You, Paul
I sure may need some help.
Actually, I just checked the pics you posted recently of the 1.25" adapter with the shoulder ground down and I realised that I'm not actually sure if I couldn't get focus with just the camera.
My first use of the DMK was during cloudy periods and it may have been the clouds drifting in front the sun - sure makes it very difficult to do much. So I then put in the barlow, the clouds had moved away and Presto! I got the sun on the "Astro Lappy"
You posted some pics on a previous thread I started but I'm not really sure I understand what you have done - looks like you may have ground the shoulder of the adapter away so the DMK can sit flush against the PST ep holder. Yes?
When I get a good day I'll try without the barlow.