Allparts E Z KEY Vintage Guitar Tuner and Hardware Lube Tuning pegs are absurdly hard to turn. Not sure what to do fix them. : r Luthier So I have a fender, an epiphone, and a Yamaha. All with vintage tuners. What's the best lubricant for these tuners? They're all perfect; and don't need to be changed, althoughI have Reviving and maintaining old (and new) tuning machines What grease would you use to lubricate tuners on a classical guitar. I found using Petroleum Jelly (vaseline) too light. Any suggestions would be great.