“I love my Schilkes but somehow I wondered if M/K main slides might help. I have installed the semi-round sterling silver in all three horns (C2, B2 and B2LB) and I cannot overstate the improvement. Attacks at all volumes and range are VERY good and secure. Core sound is also better, which if you play Schilkes, is saying something. Thank you Mike for making my trumpet playing easier and more enjoyable! I even have a friend interested in an M/K upgrade.”