My Logan 210 slings oil from the spindle middle flat pulley where it is to be oiled. There is a set screw plug in it but it must not be the correct type. I read some where that this hex socket 1/4"-20 X 3/8" screw should be a ball point. I have googled every which way & can't find a milled ball point or part labeled for this application. There are cup point ones that are smooth (not knurled). Any body have a solution? I am not sure what the bottom of the threaded hole looks like. I don't want to drop anything in there for fear of not getting it out. Thanks, Herb