Hi all. I have a makerbot rep 2 for a few years now. I have changed out more parts to where it is like new but I am still having the issues of it starting a print then stop mid way. There are times even after leveling the built plate where the filament doesn't comes out at all. Any advice would be helpful. I don't know what else to do and I don't want to get rid of it and replace it if I don't have to.

Thank you