Japie, the obvious question is, are all the burners playing up ? Generally speaking thermocouplings give trouble lighting the burner ( you know lift ya finger off the bypas and the f** goes out. bit different for a fridge though )
Think I've got the same stove, I recon the parts will be standard gas fittings as I believe the stoves where made in Ballina and I'm sure they wouldn't of been manufacturing all the vital bits.
Replacement should be straight forward, just check for gas leaks. Those crazy poms in the video tried all day to blow that boat up and resorted to putting the bottles in the cab, full open !