Someone please help, I don't want to kill my K3, I love my K3. We've been together for 4 years and everything has been fine until..... constant purging forced me to give it a labotomy and convert it to a 1800 with C5 Rip. Good for a while, then it suddenly started acting erratic, jerky belt movement, spitting out the platen randomly, stalling half way through a print and finally now not even able to perform a nozzle check. read many posts, checked encoder wheel, sensor, platens do not seem warped. Can anyone suggest something else, beside pulling the trigger? Thanks in advance.