need advice on spark plug thread repair please

[auditude at neta.com]

Hi List,

My '88 5kcstq has been sitting for a few weeks with stripped spark 
plug threads in the number 5 cylinder.  I have now received my 
Timesert spark plug thread repair kit.  I got some grease and 
cutting oil, as well as a tap wrench.  I've run into an obstacle that 
I'd like help with.

The location of the spark plug hole doesn't allow me to put the tap 
wrench on the tap and turn it.  It would seem that I need an 
extension, like for a ratchet, that would allow me to put the wrench 
much higher to clear the surrounding area.

I can unscrew one of the handles of the tap wrench, but even the 
part of the wrench that holds onto the tap is big enough to be in the 
way.  I suppose it's possible to use a small crescent wrench or 
something similar from just the outside.  It would still be tight, and 
I'm concerned about alignment.

Has anyone encountered this problem?  I may be overlooking 
something.  If anyone has any pointers, I'd appreciate hearing them.

Thanks,

Ken