In article ,
"karl" wrote:

************In fact, the only thing I didn't like was that they installed a
new Garmin
transponder antenna, without asking, because it was "recommended by Garmin."
It was "only" an extra $150 -- cheap, in aviation -- but it still bugs me
that they threw away a perfectly functional antenna because it wasn't the
"spade" kind that Garmin recommends.****************

Jay, They did you a BIG favor. You should tip them for being pro-active on
the maintenance on your airplane.

Feh. It's easy to be "pro-active" when you're spending somebody else's
money. It really ****es me off when people do more than I asked for
then expect me to pay for it.

All the guy needed to do was say, "You know, Garmin recommends swapping
out the antenna you've got now for their own. It'll be $150. Should I
do it?" It's the customer's money, it should be the customer's decision.