Last week I got annoyed with some clanking on my Yani bari. The high E was noisy due to the way it is designed and the side B flat had some play. Heat shrink tubing is my go to solution for these kinds of issues. I generally keep my attempts at repairs limited to corks (although not neck corks) and minor adjustments. I rarely change a pad but have in the past. Besides the repair guys like Steve does anyone else try to work on their own horns or do you just take them to the tech?