It was hard work but it worked!! An electric scrub brush, hot water and Chlorix "Clean and Bleach" removed the stickiness. I applied hot water, sprayed the cleaner and used the brush on areas no bigger than a square foot. I found the suggestion on Fiberglass Rv about 2 years ago. I had to buy the electric scrub brush on-line as I couldn't find it locally. I was so happy with the results!
However, my walls are tacky again! I, too, thought it was cooking fumes/grease, but I have cooked very little on my stove. Perhaps the vinyl is slowly breaking down. Our Boler
is 30 years old...
Would love to hear from other Boler owners.