Just be aware guys that he majority of these shops, local or national,
buy their overhaul parts from Lycoming and the core deposit money is
dependent upon Lycoming accepting your core in exchange... So Lycoming
policy controls whether you get your core deposit back when dealing
with them... Our local FBO found that out the hard way to the tune of
$3000 within the past few weeks... Don't assume anything, get it in
writing from the field overhaul company that their acceptance of your
core is not depepndent upon Lycoming policy...
The exceptions will be a PMA manufacturer like Superior or ECI
accepting your core in exchange for their manufactured parts without
reference to Lycoming policy, but again get it in writing before you
ship the engine...
The other exception will be the factory zero time engine from Lycoming,
where (AFAIK) your core is accepted as is... (yup, get it in writing
first) - and of course a brand new engine which does not require a core
exchange...

Denny