Michael Timler has serviced several of my chromatic harmonicas, using Harponline windsavers... I am very pleased with them, they don't seem to stick or pop at all. John "Whiteboy" Walden Cebu City Philippines In a message dated 22/10/2009 05:27:57 GMT Daylight Time, hqr@xxxxxxx writes: So who is using the new Harponline valves? Are they worth the extra cost? Gary