My Ridgid WD1670 Shop Vac is making a grinding noise when I use it in leaf blower mode. Has this happened to anyone? I really loved this vac until the grinding sound began (I still have the vacuum); & I always use the HEPA 5-layer filter instead of the standard, single-layer filter.
http://www.ridgid.com/video/vacs/Video-1670dtach.html
