Maytag Commercial W’Machine Mod’ AT35PN102

Been to look at one of these Commercial washing machines, 4 programme type with two switches to right hand side of facia, doesn’t spin after emptying sometimes & sometimes overfills, i suspected duff pressure switch, lady in laundry said the last chap she had out “adjusted this” & it was ok for a while. Seal on presets seems to have been broken. Anyone tell me where i could get one for same , its a switch that sits horizontal rather than vertical & pipe connection comes from bottom rather than side as found in most pressure switches..