LH Overdrive Valve balls

[Thomas Pokrefke <pokrefke1@comcast.net>]

I am in the process of reassembling my overdrive, and cannot find the 
two ball bearing 'valves'.  Short of spending $130 for a new non-return 
valve and relief valve, does anyone know what size ball bearings to use 
and where to find them?

Thanks,
Thomas Pokrefke