1. Ron- to replace a bad bleeder screw is more like 40 bucks2.- Don't let your friend work on yur car anymore3. Get a pro to do brake bleeding as it can be tricky and they will have the equipment to deal with any problem that arises. They are too numerable to list here, Sorry4. get the brakes properly bled now, before you have a huge wreck and get nailed by the cops and insurrance companies. If your brakes are bad and they find out you can guess whose fault the accident will be??????Get'er done LaddieASE Cert Auto tech 30 years, Shop owner