My vote ...... Don't split the list.

I DO however quite agree with Marv, it would be most helpful if all who post
INCLUDE the particular model Lancair and/or powerplant they are discussing
and or operate.

Marv, it may be a fruitless effort but how about defining specific codes or
abbreviations for given Lancair models ?

Examples might be

ES - 550G
IV - TSIO550E
IVP - NSY  (not sure yet)
L - 550N
360 - IO360

It also might be nice if posters were to always sign their posts with the
same name.

Ted Stanley
IV-NSY