M:

I have a slide in stove and was faced with the same problem. Viking
sells as extras a couple of stainless steel strips. They are designed
to act as a cover for this gap. But for some strange reason the stove
had to be set 1/8 of an inch higher than the counter and the strips
wouldn't work.

I use a toothpick to scrape out the "stuff." Supposedly wood won't
stratch the stove finish.

Joan