Anyone familiar with the stihl fc 100 edger and fs ? trimmer and how they are put together ? Because I'm only using the edger it a few times a season ,,it just sitting when I could possibly be using as a main or back up trimmer . I bought it used and its in great shape. My question is on the 100 series engines or others ... will the trimmer shaft fit into the engine housing .And also what shafts would work ? I have changed out others ,,including the trigger with out to much hassle . Of course I'll have to find a used complete trimmer shaft .. If this would work >Im in the market to buy a used one Maybe one with a blown engine .....If that ever happens with stihl ????