Steve, we are having footrest problems with our 2000 Thunder. The seat maker on ours is Villa. They are located in LA County and have the parts for ours. Give Mike a call at BCS parts. He just yesterday (Fri) ordered parts for ours for a May 12 repair at BCS.
I located the parts. Mike is a pretty busy guy so thought I would give a hand.
There is a tag on the inside chair skirt on ours that shows the chair maker.
Phone # for Villa: 888-707-7272
Phil