I have had to take a hiatus from this amazing hobby. So I feel a bit behind and forgot how to do some of the stuff I was doing. I am cleaning up my R2 printers but would like to replace the hotend with various others. Something basic I need to know is what version of Marlin is the version to use right now and where can I get it? I saw someone had a hex file with the 3950 thermistor, but I would like to edit the tables for others. I am guessing I would need the source files from there and can't do it from the hex file? (I know this is a stupid question, but just want to make sure I am not missing anything) I found WheresWaldo's version but it says not to use RoboLCD? What does that mean? I would like to use the touch screen still. I am sorry for the basic questions, I am sure I will have more until I can job my memory back from a year ago. Thank you!