My pommel and v-grooved extension threaded most of the way together then locked up. I'm sure it was because I didn't check for grit in the threads before I test fitted the pieces. I want to squirt a little a WD40 in threads to see if that will loosen them up enough to get them apart, but both pieces are powdercoated. Will WD40 damage the finish? Is there another lubricant that would work better and/or be less damaging?
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