Hi QSR, I can't help unfortunately with these for the Mayfair Deluxe, but the parts you require do come available from time to time on online auction sites. Must be a sign of the times that people are hanging on to their stuff at present, which has resulted in demand and prices have gone absolutely crazy, especially at auctions. I've seen people bidding small plastic parts well over $100 at times. Sad to then visit the local tip and find the same part sitting there for a few bucks and most times nobody wants it and lots of parts are still ending up in landfill.
What did the snorkel look like on the Deluxe? Was it the same as the earlier model?
There are impulse starters on ebay, but once again the sellers are looking for top dollar as the spare parts market is geared towards "boutique sales" on those websites. An older generation local bloke was about to bin a lot of his old mower stuff in the belief that nobody would want it and it was worthless. I told him how much this stuff was selling for on ebay and he changed his mind and decided to hang on to it.
You can still buy muffler assemblies brand new from most mower places that will fit.