I have a Ridgid table saw that I bought new about a year ago. I have used it minimally, not firing up more than 50 times. I am now wanting to change blades to go from the standard blade to a finer tooth count. I couldn't get the blade loose. Since I am a senior toolbelt diva, I called my 280 lb neighbor for help and it still won't budge. I am told it may have "fused." "Happens all the time."