Is your reed holder damaged? Don't worry, you can change it yourself.
When you accidently scrape the reed holder, it will be damaged. The profile of the template and the shape of the reed holder are related to each other. When the reed holder is damaged, the profile of the template is not be copied to the reed correctly. A possible error is that the thickness of the sides of a profiled reed are not equal anymore.
In the documents section below you can find the explanation on how to change the reed holder.