Well the first three plugs took 5 mins. the rear three have been 10 hours worth of work and counting I got 2 of the rear plugs out after wrestling getting the boots off for 1 hour then I realized the middle plug appeared to be crooked and after working all morning on it most of the ceramic piece broke off and now I can barely see the hole and the threads do not want to come loose any ideas.

 

Was the one plug cross thread before you started or after? Did you try soaking the plug with WD40?

 

It was cross threaded before and I sprayed it with WD40 and PB Blaster