I recently bought a Bonavita BV 1901GW. It is supposed to be the same as the 1901 TS but with a glass Carafe instead of the higher cost stainless Carafe option. I am very disappointed with the machine. The shower head has 11 holes but during the infusion mode, water only comes out of 3 of them and at the end of the infusion cycle most of the grounds are still dry I wrote Bonavita and their response was to send me a link to a video showing how to clean it. That didn't help at all. It sits on a perfectly level granite countertop and is receiving the proper voltage. Based on the reviews here, the more expensive 1901 TS must be a different water delivery system. Anyone else had this issue?