This printer been perfect for me over 10 years and i know how to handle paper jam as an example. Recently i though t i had a paper jam and this time I could not find any paper caught in a jam, and yet each time i try to make a single print it gives me the red signal. I looked at my paper tray and noticed that the regular size paper had a sligh curl at the front end. Usually the paper lies 100% flat with no curl. I have never noticed this before and yet i have no idea on how elongate the tray to accomadate it and also if that is the cause of my problem. So i asked how would i fit a legal size paper if i intend to do so in the future. I usually use the normal size 100%. There is a 3rd party site that would allow me to download the manual for my printer. but i cannot see downloading a 230 page manual for my problem so i denied. Btw, With the paper absent from the tray i noticed a flexable part in the very front of that tray and do not know its purpose. I did have the habit of slamming that tray after loading it to set it up.