[s-cars] Spark plug thread refurbishing

[Konstantine Bogach]

I can't express my frustration due to the havoc made by loose spark plug 
in my UrS4.   Just because I did not know about this species congenital 
defect!  I don't have time to read all posts but it could save me as 
there were some discussions on the topic quite recently.  :-(
So,  connector lead is shuttered,  spark plug's thread is FUBAR as 
thread in the head,  coil's plastic body is cracked.  Right now I am 
looking at TimeSert repair kit for deep hole (upto 6'').  Does anybody 
went through this procedureJ?  Any better product than TimeSert? 
I don't have necessary tools to measure all geometry.  Does anyone has 
dimensions for seat diameter and thread length? 

Does every one has plugs loosening?   Any remedy?

Thank you.

Konstantin
P.S.  Please,  when new person join the list after recent car purchase,  
welcome him by raising awareness of loose spark plugs (anything else 
treacherous like this one?) :-)