Some one added a scrub brake to my bike,but it does not look right. There is no way for it to engage the tire unless you push the lever to the ground. should there be something else on it? Maybe a pad or a piece that will wear? It has one hole in it to the side. It had a caliper but its gone. I got a cheap one from ebay but its not wide enough to fit the sprocket. I think I could try washers to make it wider.Its real close but not going to work.I figure the scrub brake will work just not sure how it should work.