We recently discovered that AutoZonePro sells tools. Not the cheap disposable kind but the worthy keep-forever kind. The trick is to thumb-scroll the Tool & Equipment Quarterly at AutoZonePro.com then ...

Airborne Flying Services of Hot Springs, Ark., developed and now offers the Valve Wizard, a set of three valve spring compressor tools for Lycoming O-235, O-290, IO/O-320, IO/O-360, AEIO-360, O-435, ...