RE: Thread Repair
Todd,
Welcome to RCU.
You can do a search about this subject within the Glow Engines forum.
It has been discussed several times lately.
A Heli-Coil will solve your problem, but the kit (for 10 repairs) is very expensive.
You need the 1/4-32 thread, which is rare UNEF. Another thread will not work!
Or if your engine is made by a 'normal' company (not OS, TT, Etc.) buying a new head will probably cost less...
Edit: Clarence Lee of RCM offers thread repair for a competitive price.