" I'm running Fireball hots. I heard some people had seal leaks with them ".
This was generally from wrenching the centerpost , with a crocodile glow clip , or mauling it fitting a clip in say a enclosed B T/R , as the ceramic was brittle - rather than weak .
Back in the 70s for team race , aryldite applied with a toothpick or match , around the bottom of the post through to the plug body , was a common ' fix ' , so it wouldnt blow out .
Dunno but assume if you didnt knock / abuse the post , they wouldnt play up . Taipan glow pkugs look the same , any differance in construction . ?