I feel kinda stupid asking this, but I can not for the life of me do a good trim job with the straight shaft echo srm 225 I have. I have a little echo gt 200 curved shaft or something like that, and I am able to do an awesome job and be very fast with that one. I dont know if its because im 6'5", or left handed, or what. It does seem like the straight shafts need to be longer for me though. The curved ones I can overcome the shortness better for what ever the reason. I like to trim from left to right. Any suggestions would be great. Thanks.