When I had my mini bike store I worked down the street from Flexo in Century City and I went there on average twice a week for 3 years picking up parts for my store. I think during all my visits I never went into the back shop more than 10 times. It was surprising how small they were then in the early 1970's.
Most of the time it was just 4 people total working there. The two brothers Jack & Irv Levi were the owners and Carlos did most of the assembly and welding and one other worker that did most of the delivery and pick up. A lot of their trade was from magazine orders and they had the shipping down to a manageable task.
They always were up for a good story, and could answer any questions as they had been in the business for so long.
Steve