Originally Posted by
thenomad
The center of top tube. The guide is ovalized with some slight affect to the top tube. Then there is a small dent near it as well. I'll try the wood block in a vice trick first and see what happens on the regular dent. Not sure yet how I'll approach the guide.
See if you can slide e.g. a welding rod through it to reform it. Choose a diameter that fits snugly through one of the undamaged guides. Grind down one end of the rod to a smaller diameter, tapering gradually up to the full diameter. Trim the rod to a size that will allow you to insert the tapered end into the damaged guide and gently tap with a hammer to force it back into shape.