I am having difficulty getting lenses to fit the Twolite buckets that came with my '30 Model A Coupe. I thought they were correct buckets for the car, but lenses I have, don't fit. They are too small in diameter. The lenses I have are: Diameter 7 7/8, Design# 71122, Pat# 1887107. I am told the lenses I describe are for a '30, but yet don't fit. I'm lost.