Also, the Extra has an MT composite prop, which has to be pulled and
overhauled every 6 years.

I plan on having the engine pulled this coming January when it's too cold to
fly the Extra anyway, but the next question is whether to do the prop a the
same time (claimed downtime is three weeks and around $3,500) or wait until
next year when the prop is actually due. (which means another month of
downtime again)

The worst part is that the engine has been running well- it never even needs
a quart between every 25 hour oil change, the compressions are solid, and it
idles and starts well. All this is on an engine that has no air filter and
is asked to go from 2700 rpm to idle and back again many times during a
practice session.

The prop is also clean and has no nicks, and doesn't leak any grease.
However, it has to be pulled every six years, crated, and sent to Florida
for overhall, then returned, remounted, and rebalanced.

Oh well, it's just a toy and there doesn't seem to be much choice in the
matter.