i have had my robo r1 plus for over a month now and it has been printing like a champ until tonight. I am printing with pla btw. The printer homes like normal but when it goes to print the first layer it is too close to the bed. This causes it to not be able to extrude and the filament grinds where it gets pulled down into the hot end and now I have my issues. For one the filament broke off right where is is going into the metal part. I'm attached a picture. You can see the red filament in the hole. So first question is how can I get that filament cleared out. Then how can I make sure the nozzle is high enough when I do print again so that I don't have a repeat of this and get the filament stuck. I know about the z offset option just not sure if I need to select a higher number or a lower number for the offset. Please help . And thank you!