This is another excellent review for Crystal Overhead Door. Dave and Eric just left, and I'm so enthusiastic about their service that I sat down to write this review. I had called for a routine service inspection of my garage door and lifter, which hadn't been done for over five years on this 8-year old installation. Within twenty minutes, the down-force was reset to a safer level (!), the door-travel was smoother, a bent lift-arm had been replaced, vibrations and noise were minimized--they even replaced a burned out lightbulb. By the way, take them up on their offer to sell you a $10 spray can of lithium-based lubricant for all moving parts and the track--slightly heavier and much longer-lasting than WD-40. All this for only $110--including the can of lube! Can't beat it!