Ace,
As an Iron Barrel owner I have noticed a few times you have mentioned parts starting to become scarce. Worries me a bit. Are there any specific parts where you have noticed problems with availability?
And on the same topic, are there parts you would suggest an enthusiast who plans on keeping the bike long term should order and have on-hand?
What I notice mostly is that the large castings are becoming more scarce.
Things like engine cases, primary cases, cylinder heads.
I don't use many stock internal parts because we upgrade everything in our builds, so I may not be aware of the situations with that stuff.
I think you will find that when RE has nothing left for parts of these bikes, other companies will produce replacement parts instead. Even if I have to do it.
This happens with most classic bikes that were built by companies that went out of business. Enthusiasts take up the slack to produce the needed parts.
I wouldn't worry too much about it.
You'll be able to get tune-up parts, and it's hard to stock every single part that might go bad under some unknown circumstance.