I have the above sander and have owned it for several years. Love the sander for the work it does and because it was so smooth and balanced. Well it hit the concrete last year and it now has a bit of a wobble to it. It drives me nuts as it's not the same tool anymore. I've taken it a apart to some degree to see if I could see anything that didn't look right but I came up empty. Does anyone have experience with something like this that might help me fix this tool? One option is to take it in for repair and if they could fix it, the cost would probably warrant a new tool I'm guessing. I may do that though to see what they say but thought I would check here first. Wishing it would be something simple but more than likely not.. Thanks for your time.