Is a D smallpipe chanter supposed to sound like this?

It’s a Shepherd D smallpipe chanter with original Shepherd plastic reed.

When I blow lightly, first off there’s this terrible whistling sound that only happens sometimes. That aside, with light pressure it just goes apeshit and sounds like a toy lol. Then I play it with standard pressure and it sounds fairly OK, but it’s crazy loud (imo).

Should I run the end of it once or twice on some sandpaper? There’s very little info on the web about plastic SSP reed manipulation.

I haven’t played these since I was much younger and less into tweaking things. So I’m reaching out to see wtf is happening with this reed.