Been a long time since I've posted here, but finally getting my '67 A/C in working order (hasn't been functional really since I've had it). My car is a factory A/C car so it has the 3 speed switch. The ductwork is all in good shape and I haven't been able to identify any leaks. The vacuum lines are all new and motors appear to be working fine as air gets routed to the appropriate places based on the switch position. My issue is that the airflow out of the vents is really weak. The motor seems to have 3 speeds, but the airflow even on high is just not that much. I'm not expecting airflow like a modern car, but I would at least expect to feel the air from the driver's seat... The wiring is all brand new, so I don't think the motor is getting undercurrent or voltage unless the motor resistor is bad. Question is - if the resistor is bad, would the motor not work at all or would I get reduced speed like I'm experiencing? If the airflow is just the way it is, is there any blower motor upgrade out there that fits in the factory box? I'd like to avoid the expense of a complete redo on the system if possible. Any input would be appreciated!