I have a Microtek E3+ that seems to get stuck at the bottom of the scan. It will go down the page and then just sit and vibrate at the bottom and never come back up. It's like the calibration is off. Is there anything that I can do at home to fix this? I hate to send a 5 year old scanner in to have $100 worth of work done on it when you can buy a new one for the same price.