Hello all. I am new to the forum but like it already. I just purchased a new Stihl ms260pro. The saw came with an 18 inch bar. my question is if the saw can handle that size bar easily? Also, why is there 2 chain pitch options on that saw? Both .325 and 3/8 are available. My saw came with the 3/8 option. I wanted a light saw for smaller trees and branches, etc. Hopefully it will live up to my expectations. Thanks all..