Go to Patchman they are experts in this field.

http://www.patchmanmusic.com/

Good luck!

 

They should come off easily. Since you bought it used however, it might have been glued or something. Just unscrew the reed - Changing the reed does not require you to remove it, but it does need periodic cleaning. New mouthpieces are around $30....buy a new one and then if you have to, apply force...

 

The first time I removed the mpc from my WX5s it was extremely difficult. I used a flat blade screwdriver and very slowly pried it off, rotating the screwdriver around the seam, and unfortunately scarring the metal ring in the process (not very noticeably though - see pix at http://www.nortonmusic.com/wx5.html

When I put it back I used a lubricant called "Silicon 7" that I purchased through WindWorksDesign (find it in the repair parts section) and I haven't had a problem since.

Notes

 

The first time I removed the mpc from my WX5s it was extremely difficult. I used a flat blade screwdriver and very slowly pried it off, rotating the screwdriver around the seam, and unfortunately scarring the metal ring in the process

Thank you. I did it this way and I removed it :bounce:

 

Hmmmmm...so WX on, WX off, doesn't apply?:laughing:

 

WX On, WX Off? Oooh, that's bad....

Anyway, try TORQUE. But be careful not to turn it more than about 30 degrees. If you do, you can damage the lip sensor.

If you're at all squeamish, sending it to Patchman for repair may be your best bet.

I've used cork grease, recorder cream, Silcon 7; they all do about as good. The Silcon 7 doesn't tend to fade away as much, though.