Tom ,
Nice job on the paint . I'm envious of the booth . I just wait for a calm day .
The flat pieces atop the rack look out of place to me . Like maybe they were added after the factory .
They just don't look Simplex simple . Like Rick suggests , maybe they're for a buddy seat . I'd think that the rack would be strong enough without them , but , could be the intended passenger wasn't exactly a lightweight .
Pete .