kiwimodeller ...I think we [in model marine steam market] as a small minority consumer group get a service relative to the manufacturers wishes...& my limited experience is.....
French engine manufacturers = prompt response, prompt shipment, after purchase assistance ....

near non existant [JMC] ...Anton has better response
Japanese engine manufacturer

= need to deal with a 4 x fold purchasing tree & no direct access to the manufacturer for a response to a question

[Saito]

+ a 12 week delivery?
UK engine manufacturers........I have not purchased any.....but from whom?
UK boiler builder = ACS Enginering = prompt response, prompt shipment....good to deal with & 100 A1 ...but no longer in business
UK accessories manufacturers? ....Forrest Classics = prompt response, prompt shipment....good to deal with & 100 A1 .. MacSteam has a 100 A1 reputation
German accessories manufacturers? ..... Winfried Niggle = prompt response, prompt shipment....good to deal with & 100 A1 reputation

..in a perfect world...my next build would have......

Saito engine
Macsteam boiler + accessories + gas tank + deoiler/condensor
JMC gas/steam regulation
Winfried Niggle lubricator + valving + tubing flanges + accessories ...............Derek