This is an aged printer which works fine but every now and again, when it's doing all it's pre-print cart positioning etc, the cart seems to jump or do something that causes a screeching sound. The cart is then found at the extreme left of the printer & it requires pushing down, and resetting the printer. This can happen before any printing job and sometimes not at all. No obvious trigger. It's a small but annoying issue - curious to know if there;s any method to try and prevent it from happening?