After several weeks of bad weather, I had a chance to use the trial of MDL6 for the past two nights. I wish I had better news, but the quirks of this software are very discouraging, particularly when it comes to guiding and the way it handles cameras. 1. 2017 Mach 1GTO with spring-loaded worms, controlled by the ASCOM setting 2. Canon DSLR controlled by the EOS II setting 3. QHY5L-II controlled by the ASCOM setting Friday I was able to connect to everything properly, with the mount responding to move commands. Guiding was another story. Graphs were all over the scale, starting off-window and migrating down and up on both axes for more than the chosen +-5 arc/sec. RMS was over three. I shut down MDL and went to PHD2 and got a mediocre total RMS (bad seeing) of about 0.6 to 0.7". Last night I had better (?) results with MDL giving me a total of 2.5" RMS. The guiding show the lines going somewhat sideways but I could not clear the graph and have these results on the "Zero" line. They started up about 2" on the X axis, and -2" on the Y, with each never migrating to the zero line. Different exposure times from 1-3 seconds and aggression settings from 8-9 were tried. Going back to PHD2 gave me 0.4-0.5" total RMS results as seeing was better. Camera control was very buggy. Both connected, with the DSLR Camera 1 acting normally, but the QHY5L-II on camera 2 in the guider expose tab also showed an available ISO choice as was present for the DSLR. No matter what I did, that ISO window would not gray-out. Just now in my living room, I deleted and constructed the original configuration and that ISO window is now grayed-out for the QHY. For both nights, calibration was very fussy and worked only about 25% of the time, with me changing the settings to trying different time periods for mount movement. What should've been right-angles became triangles or a single straight line. I really want to like this program, but it seems the idiosyncrasies are everything I've read them to be. <edit> I also could find no tab in which the guide scope camera pixel size could be entered. Any comments or advice would be appreciated.