1) Overhaul or buy a new one?

New.

2) If buying a new one, which company? And is there a core refund?

Millennium, hand's down.

3) What is the difference in break-in procedure for overhaul v new?

No difference.

Make a cool lamp out of the old cylinder!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"