For Jack and Everyone, I love my new 1500A! Oh, how much I love it... But: the valves are very noisy. Almost like a rattling of metal and spring, especially on the third valve: on that one, it really makes a metal "ting" sound at the top. I know that metal valve guides are more noisy. And I've read that Kanstul valves are noisy at first, but that they quiet down after time. I just wanted to get more feedback from you guys on it. Jack, what have you experienced? Others? I'm using Pro Hybrid, at Jack's suggestion, and the valves are very very fast ... just concerned about the noise. Thanks!