It was converted to R134 by a prior owner. Does that sound like the evap is the problem...
It sounds like the PO who decided to convert to R134a is the problem! Nasty hygroscopic corrosion-inducing oils... I don't think 123's are noted for evaporator problems, though that could well be your problem now. An evaporator leak that bad ought to be detectable by sniffing for a refrigerant leak at the condensate drains over the transmission. Just MHO! -- Jim
