At one D&D site I was at we had a reflector plate in the core that had to come out, with special tooling we attemped that it didn't work after a week of scratching heads management decided to pull the core box with the plate in it and deal with it later, in the process of pulling the core box while myself and another guy locked it down by spraying a coating on it we noticed there were set screws in the bottom of it. A few weeks later while in a meeting management came up with the bright idea hey spray WD40 on it.. I got pissed to say the least and refused to do it as I knew that wouldn't work,, they wouldn't listen and went ahead with there plan,, needless to say prolly a Rem later they decided hey lets flip it over and see what may be holding it in there..Duh.. they could have saved sometime, money and dose had they listened to what I had to say..Some folks are just to hard headed...