Any one here have a mini-30 made in the late 80s early 90s that could take a picture of their rifle bolt ? I have a 189 series and the bolt has file marks on the bottom and on the left locking lug corner and am curious if anyone elses bolt looks similar. I looked at a 580 series mini-30 and several other 14s and they have no file marks. Also used to have a 195 series mini and it had no filing. Thanks.