My Wanhao Duplicator i3 has started jamming early in the print.  The filament is wrapped around the driver gear in a gnarled mess.  Tried 3 different types of filaments and the same issue happens with every print.  Pic is attached.  Anyone have a similar issue?  Know the cause/fix?  Thanks.
Hello! I have wanhao i3 v2 with lots of upgrades for sterdiness. It was printing perfectly (well almost) until i started noticing ripples on X axis walls on printed parts. Then i saw the cause - X idler bearing failed. I have replacied it with and upgrade of mine. (was thinking of it for a long time). After upgrade is done, all is set up i started to print.