Also while I am online, and there are people here, what is up with the bar and chain I got? It is an oregon I got at a hardware store. It says it will fit the 306A as well as mac homelite other poulans and more. It keeps loosening up on me, now, the holes for the guide bar bolts are egg shaped vertically and the bar adjustment pin is just small and round. Is this the wrong bar, and if so, what do I need. I already know the bar and chain I need is 3/8 and 16" to 24'
It sounds like you left out a few dimensions. Besides 3/8 pitch and bar length there is the gauge (width) and there are different bar mounts for Homelites, Poulans, etc. Sounds like you have the wrong bar for your saw.