I have a 300 and I let my 10 year old try it.........he clicked the bail over when it was in the wrong spot and that was the beginning ......I had to take it apart to fix the Bail Spring and so I thought.....I had not cleaned it in a long time(don't try to fix what is not broke) anyway...I took it all apart and gave it a cleaning and put a few drops of reel oil here and there....put it all back together and it was spinning like a champ. Took it out to use it a few days later just to be sure it was OK...all went well until I tried reeling in the line....for some reason it went almost a full turn on the handle and then jammed up. It would not go forward or back.....I am wondering if I somehow lost a shim......I don't know what to do ...and the schematic I find on this site is not very clear to show where shims are supposed to be....anyone have any help??? thanks