Hi all, long time watcher here.
I owned a Jabiru UL450, purchased it from the builder here in NZ.
Total engine hours are about 850, and has run perfect since day one. This is a 2200
Only issue I have had, is that uncommanded flap retraction, which was on very short finals, as soon as it happened, I applied full power and didn't hesitate to go around to check what was up and happening.
What caused that? Simple, just wear on the through bolt, quick tighten and check, and never happened again.