Doug is certainly the expert when it comes to using the ME. The technique I learned from him was to trim a piece into a taper, sort of like one of those foam paint brushes, and use the thin part just like a brush instead of a dipping motion, which I never use anymore. Think brushing paint on the sides of the stylus carefully from top to bottom. It does take a reasonably steady hand and good visibility. This method should have easily taken that gummy crud off, but you would probably have had to just cut away that hunk of junk.
Keep working this with the steam and rcm, I still believe it will work very well for you once you find the techniques that work in your environment.
Also, you mentioned using a home-made cleaning solution. What this is made of, and how and when you use it in relation to the steaming step can have an impact on results. I like the idea of using an alcohol, or some other suspension, based cleaner along with the steam. This I find to keep the crud in suspension so it can be vacuumed up immediately. What works for me is to steam and then apply an alcohol based cleaner (AIVS in my case) while the LP is still wet from steam. Others report better results by applying the cleaner before steaming.
Keep working this with the steam and rcm, I still believe it will work very well for you once you find the techniques that work in your environment.
Also, you mentioned using a home-made cleaning solution. What this is made of, and how and when you use it in relation to the steaming step can have an impact on results. I like the idea of using an alcohol, or some other suspension, based cleaner along with the steam. This I find to keep the crud in suspension so it can be vacuumed up immediately. What works for me is to steam and then apply an alcohol based cleaner (AIVS in my case) while the LP is still wet from steam. Others report better results by applying the cleaner before steaming.