Hello, no I don't customize any harmonica.

I don't know why people give bad reviews to the chrometta, maybe because it looks like a toy with the plastic and also because of the large holes.

But for me it's fine, because it is quite cheap and I don't plan on keeping harmonicas all my life, so when I was younger I destroyed quite a few, not by playing them but because they were at the bottom of my school bag or in my pocket and I sat on them :-)

I ended up buying the chrometta, It plays very well, I don't see the the leakyness that people complain about, I actually think it's quite airtight.

By the way, your videos are very good, keep on making them.