I took my mountain bike in to the same shop for some adjustment to my drivetrain and to check out the suspension fork. It's an old bike that I have not ridden in years. It's been sitting in the basement while I have spent time riding the road bike. But I've been itching to hit the trails again especially with a 2,100 acre park a couple blocks from my house. My biggest concern was the fork as I thought it wasn't working properly. The mechanic checked it out and felt it was working just fine and suggested I just leave it alone. He lubed the stanchions and that was it. He also spent time on the drivetrain and brakes and it's shifting smoothly again. It's a Schwinn that I bought back in the late 90's when my wife and I bought matching mountain bikes. Nothing special. Schwinn Mesa GSX. I took to the mountain biking while my wife's sat in the basement. As I rode more and got better I began upgrading the bike one part at a time. First was the front suspension fork which I replaced with a Marzocchi Bomber Z4 which immediately turned the bike into a true trail bike. It already had a Shimano Deore LX rear derailleur so I upgraded the front derailleur, shifters and crankset to LX as well. I bought Sun Rhyno Lite rims with LX hubs and replaced the handlebars, stem and seat post with Titec stuff. And lastly changed out the grips (can't remember the name). I easily spent as much or more on upgrades as I did for the bike itself. And it was well worth it. The mechanic said not to ever get rid of that bike as it is a quality frame based upon the same design as Schwinn's venerable Homegrown and was built back when Schwinn was Schwinn. Looking forward to my first trail ride in years.