Hey. It’s been a while. Got a job about a month ago centerless grinding steel bars not sure what kind of steel. 1 1/2 to 4” bars 12-24 ft. Having lots of problems. No one to really discuss them with right now. One guy quit, one hurt his shoulder. 24” x 20” wheels. Having a problem with a section in the bars Same spot. Where as I told a coworker. It feels like I’m making Allen keys. Center height ok at least according to the formula I was given. Bronze work rest. 45 degree angle. Usually occurs as the part leaves the support heading into the grinder. Vibrates terribly. Not sure why. Bar and work rest seem parallel. Has happened on more than one job. Like the job and hope I can figure this out so I can keep it. Any suggestions? More info needed? Reg wheel 32 rpm. .012 taken off per pass. Crazy. Only about a 6-10 in section bad. Bar grinding much different than bolts. Lol