Jeff,
I too replaced floors and peddle mount. The rubber that fit the two ball studs and act as a hinge was gone on my peddle. after cleaning out remaining rubber I filled with thermo plastic and pushed over ball studs while hot. It works great and will pop off if needed. The plastic is warmed with hot water and softens to a peanut butter consitency. When it cools to room tempeture it is white and feels like hard white nylon. I get mine from any jewelry supply house. Many uses; Need nuts for wood trim? mold to threaads, let cool, unbolt. A new plastic nut...
Jim Saylor
Kauai, Hawaii
'65 230SL