Plastic combed Chromatic harmonica issue on hole 1 - fix

I get a lot of calls about issues with hole one of a Hohner CX12. This is an intermittent fault with the blow note. It raises its head after about 5 minutes of playing. Its a simple fix. This video should alert you to what to look out for.

[@storm1968eu]

i was able to effectively diagnose the problem you described with the 2 blow hole of my Hohner Super 64 Performance, only weeks after watching this video. many thanks for sharing your knowledge and insight.

[@garylehmann800]

Thanks for sharing, I will tell folks about your solution.

[@johncook9040]

Hi gary.. been doing a bit on your hamonetta today.

[@nacoran]

Wait, if you are here... Gary Lehmann is everywhere! :)

[@nacoran]

Same to you buddy! (Middle finger pointing joke... sorry, I'm not very funny.)
I got excited... I saw the title and thought it was going to be about plastic reed harmonicas. I've got a Magnus chromatic. I don't really play chrom but I've been considering giving half valving another shot.