i have been running a Gerber 408 for approx 5 yrs. Up until recently I have had no issues I couldnt fix. Today the machine decided to not want to return to its true home 0,0. Every time I move the x and y to a different spot then hit the 0,0 button it begins to return but stops at a different point. This point is never in the same spot. I have tried to reset machine and rest it over night, but still happens. Any feed back on this issue would be helpful.