I recently bought a Heritage H575 off eBay. Great guitar, only problem is I found a hairline crack about an inch long at the neck tone pot. I have a few questions for the luthiers/repairmen out there: 1. Should I repair the crack to keep it from getting worse? 2. If so, I was going to use some thin superglue and let it seep into the crack. Should I leave the repair at that or should I then apply lacquer, wet-sand and buff that area out? I'm wondering which will look worse, the hairline crack or the finish not blending in perfect after buffing. Thanks.