Chuck was at the temple today to do the Vajrasattva Practice, which was going on all day. He was in the prayer room practicing, but when we called asking for tools and advice he came right up...We went straight back to the location of the problem as we worked it out yesterday and couldn't see anything wrong...but after some tinkering it did start to work again! Chuck thinks there is debris being drawn in through the filter, and clogging the piston...in any case, it worked!'