I was working on my new blaster today. I found some nice chain rollers at RMA with bearings. Anyhow the top one went on just fine. When I removed the lower roller I noticed that the stud was messed up. A previous owner must have ran it with the lower roller missing and chain running under the stud. Needless to say the stud was cut into. Is there a way to but another stud on or don't worry about it and put the old roller on? Well I have a spare expensive roller for the top again when that one blows up. Have a good weekend everyone.