Troubles with 2016 Rav4 starting warm (an hour after engine is shut off).

What is your question?

Hot and cold starts are fine. Runs well and fuel economy is fine. If I start it an hour or two after the last trip - it cranks but doesn't start. Only the second try works. Fuel additives like GUMOUT make the problem much smaller but it never goes away completely. I bought the original Toyota fuel system cleaner - no effect at all.

What makes this problem better or worse?

buying gasoline from some obscure mom and pop station

How long has your 2016 Toyota RAV4 had this problem?

a couple of months