I'm having a problem with my stationary edger! There's a guard that is bolted to the machine so that it deflects dirt, but I CANT SEE WHERE THE BLADE is cutting.. I have take a peak to my left while pushing the edger so I can see where it's cutting! I was wondering, is it SAFE TO REMOVE THE GUARD from the edger? I think it'd be easier to see! What do you guys think?