We've been struggling with our kbgv and km5 combo over the last 2 months. We went with the Moccamaster because it was supposed to be a simple/great no-nonsense cup of coffee. However, We have been plagued by overfilling/volcanoes/slow drainage since day 1. We bought moccamaster filters and everything was bought through moccamaster's website. Support only tells me to follow the recipe then says everything is fine and is expected. This happens regardless of folding the filter or not, and doesn't happen on a brew of just water. We can reduce to 4 scoops for 8cups and it's a little better, but still volcanoes quite a bit.
The moccmaster brand filters volcano terribly, this is regardless of pre-