Good morning everyone. Ok here is my question. I am looking for some new chains for my 028 which is 74 links .325 pitch and .063 guage. Most of the stuff i cut is already down and tops and can be a little dirty. Currently Im cutting about 80% ash with the rest being walnut, elm and other softwoods. I really like the Stihl brand chains but confused on the p/n for what i need. I believe im looking for a semi chisel since the wood could be a little dirty but would like a full chisel for the small amount of clean wood i do get. Any help or recommendation would be great. The reason for new chains is during my training period for hand sharpening I kinda got my current chains all outa wack.