I do NOT have a dog in this hunt but thought I'd throw this out there...
Regarding Heli-Coil inserts. From the founder of this forum:
<blockquote><hr size=0><!-quote-!><font size=1>
quote:</font>
By Bob Necker - The "Right Reverend Robert" - Savior of Cub Cadet 'Originals' in Big Sky Country - Montana USA (Bnecker) on Wednesday, October 13, 1999 - 01:04 pm:
Jim, Steve,D Roberts-
Well here goes the nitpicking and what not again.
Heli-Coil® inserts are a low end thread replacement (read junk).
Use TIME-SERT® inserts and you'll throw away the Heli-Coil® inserts. After you have wallowed out a Heli-Coil® you can still salvage the part with TIME-SERT® inserts. This comes from personal experience though so take it for what it is worth. (BIG-SERT® also has a much cooler website ! ! ) I've had these inserts in the plug holes of my 1971 Shovelhead for more than 10 years now without an iota of trouble. Heli-Coil® inserts would never last a season.
Heli-Coil® inserts are screw thread coils of stainless steel wire having a diamond shaped cross section.
BIG-SERT® IS A HEAVY WALL SOLID BUSHING.
EASY TO INSTALL WITH POSITIVE PLACEMENT.
BIG-SERT® GIVES INCREASED LOAD PROTECTION
FOR CRITICAL USE.
BIG-SERT® WILL REPAIR OVERSIZE HOLES WHICH
HAVE PREVIOUSLY BEEN REPAIRED.<!-/quote-!><hr size=0></blockquote>
Heli-Coil®
BIG-SERT®
Time-Sert