Do you have another pedal to check? From your explination, a FS-5L would do what the FS-5U isn’t doing... latching into the position you want.

Enjoy the Pa1000!
_________________________
~Johnathan
"The Shueys"
www.shueymusic.com
Yamaha Genos - RCF M20x - RCF HD10A (Stereo) - Jupiter Pocket Trumpet - Sennheiser e935 - Neumann KMS-104 plus-N