Since I retired I have started to ride a bike.I have a knee that prevents many other activities, biking is possible as long as I keep it relatively flat.I have found a Univega at the dump that I am riding and another Univega that I am restoring.I hope to use this forum for assistance.I haven't ridden or wrenched since I restored an old bike as a kid.Now that I'm an old coot I remember how much I enjoyed working on bikes and wonder why it took so long to begin again.Thank you all for any advice you may give me.