About a month ago, I purchased a RedMax BCZ2460S String Trimmer, on the belief that brand is invincible, the best there is, durable, reliable, great performance. Well, if they had a trial period, this thing would be returned for a refund immediately. I used this trimmer twice so far. The first time I used it, I had a job that lasted a few hours, and at one point, I noticed that my hand fell asleep, and then realized that it was the vibration from the tool that caused it. The tool performs fine otherwise. The second time was for lighter work, less throttle, less work time. The lesser applied throttle seemed to increase the amount of vibrations being transmitted thru the tool into my hand. Horrible, vibrations were so obvious. Dont take that to mean full throttle eliminated it -- the vibrations are still there. I suppose I got suckered into all the hype of that brand, the strato-charge engine, etc., but what is the point, if the design flaw is so bad that it damages the nerves in my hand. My Brother is a physician and he told me that vibrations like that can be a cause of Carpel Tunnel Syndrome, that I need to stop using the tool immediately. I was wondering if the hollow drive shaft or the rubber vibration dampers might be the cause? About 10 years I ago I got my first RedMax String Trimmer, a BC2200E, which I still have, it works great, lightweight too, and in comparison it has no vibration issues. it has a cable driveshaft. I also had a Stihl FS66 Brush Cutter, solid steel rod, and that did not vibrate either. This new string trimmer, the BCZ2460S, has a hollow steel rod, with something rubber on it. What do you guys think is the cause, the rubber, the hollow steel driveshaft, or perhaps the combination of both? Do all brands with hollow driveshafts suffer from this problem? Can solid steel driveshafts have this problem as well? Can the problem be fixed, like removing the offending rubber, and/or replacing the hollow rod with a solid steel one? I posted this in hopes that other people who own this tool might have some kind of helpful information or advice. PLEASE DONT START A BRAND DEBATE and send me one liners like get such and such brand and model -- it wont help one bit, but only serve to push me away from the recommendation.