My front diff case broke at one of the tower connections. Was in the process of replacing it tonight. Hit a snag. I can’t for the life of me get my outdrive couple off. The set screw has been removed, but that sucker won’t budge. Anyone else dealt with this on this car or any other RC. I’ve got it soaking in some PB blaster overnight, but don’t expect much. Could lock tight have gotten down in there or something? I hate to have to order a bunch of little parts just due to this.