Hello recently my after 3 years of use my FC8600 does not cut all the way through thick material and lam for mx. (Makes it through lam only) Been cutting for a couple years and just started happening. Thin material cuts perfectly. I have a new blade and just bought a new blade holder based upon advice of graphtec tech support. Blade is set right and cranked up force all the way up and it does not cut through. This just started happening. Anyone know of the electronic up and down mechanism ever goes bad or do you have other ideas?