Hi Greg,
You have the little sister to my Planewave scope
.
I had the same issue about a year ago, but i came up with an answer.
What i did was to move the scope so the mirror was vertical, and the scope pointing slightly down.
I then used some thin flexible plastic sheet (Like the plastic used in the front door take away shops, and wedged it between the mirror and the cell wall. this way the plastic sheet will bend to an arc shape and its wide enough that it curves around more than half the mirror and long enough to stick out the front. This plastic sheet will allow the water to run down its length to outside the scope where it falls into a large plastic tray, so it doesnt make a mess on the floor.
I then use a plastic spray bottle with a mixture of detergent to spray on the mirror, and allow it to soak a little. I then used those cheap dusters that look like candy floss on a stick, and soaked that into some detergent as well, an i just let it sit on its own weight while gently moving it around, while spaying ample of detergent/water mix on and around it. I then just used distilled water in another larger "Pump up" spray bottle, this way, once the bottle is pressured (By Pumping it up) i just need to point and spray the water to clean that section without my hand getting tired sqeezing the trigger.
I do this one sction at a time, then i rotate the scope to do another section, and move the plastic sheet to the next section to continue. I also use foam between the Baffle and the centre of the main mirror so no water leaks down in there. You should be left with a clean mirror..
I would love to use the polymer spray, but because my mirror has a rubber edge on the mirror, i think it may destroy/deform it.
The polymer is by far the simplest and fastest, but due to the rubber ring, i cant use it.
Theo