Perking coffee -- how long?

Tom Trostel wrote:
Kroger sells "Wrap Coffee Filters" like Johnson said. Much like standard filters but thinner. Today, most people use drip machines so coffee companies sell their product ground fine. It will stop up the holes in most perk baskets. I make coffee for 2 rv rallies per year and average 250 cups per morning. I always use filters in my four 30 cup electric perks.

I think this is related... one thing that happens often with my stovetop percolator is that it will overflow - I have to watch it when it first begins perking. I think this is related to coffee "plugging" up the basket. I think I need to try a paperfilter in the basket.