So there is a lever that pushes up on the end of the trip stop mechanism that pushes the drip stop open by the lip of the carafe as it is pushed into place. Often the carafe gets caught up there as it doesn't seem to fit into place correctly. Tilting the carafe towards the machine fixes it but I don't think that's normal. Problem could lie here because the identical model in our beach house has no such issue and I've never had the overflow problem there.Thanks for the pics. We both have the same safety switch on the carafe. The CDT basket has a flat botton, yours has a V bottom. You're saying that you're getting fine coffee grounds between the filter paper and the bottom of the basket? Okay, I guess I might be able to see that IF that pour stop mechanism isn't opening fully. The pour stop on the CDT basket is a manual slide, I just removed it completely when the rubber stopper kept failing (2 screws.)
HEY.... maybe that's it. The drip stop on yours is controlled by the presence of the carafe. If that foot plate isn't in place, is it possible that the drip stop valve is not opening sufficiently? I'd have to wonder if that valve just isn't opening wide enough.