Wondering if anyone has had trouble with the Wellman glow plugs swelling up in short period of time?I'm continuing my IP rebuild and checked the glow plugs yesterday and noticed the 2 rear plugs both were dead.Just replaced them all about 6 months ago and replaced these two after checking them but the one under the turbo was fun to get out but got lucky and got it out.The glow plug under the turbo was split and swollen so replacement came at a good time.Is this common and has anyone else experienced this problem as I did notice before I took fuel system apart is was getting kinda hard to start like glow plug problem but everything I've read on here guys say use only the Motorcraft or Wellmans?