I've been mowing for 7 years and mostly trim full time with a Sthil FS250. It never used to bother me but I have started to get arthritic type joint pains across my entire trigger hand and as of lately experience numbness in my pinky finger. The next day I'll wake up and my joints will be so swollen my fingers will open half way and lock/pop until I massage them. Never had any problem the first 5 years of my job but once I hit 30 it seems the little things are catching up with me. I've started using the included shoulder strap to reduce weight on the trigger hand as well as Mechanix gloves but it's getting to the point I can't go on and cripple myself. I'm seeking suggestions for low vibe trimmers or different trigger mounts so I can continue on with my job.