So i've had my bigbox for coming up 2 years now. It was a home build back at the time, which up until about the last 8 months I have had running some what smoothly (excluding the occasional resolved fault here or there). Recently though it has been failing to print consistently and now the last few attempts have produced nothing and I spend hours looking at adjusting material settings to no avail. My conclusion is that it has to be a hardware fault somewhere. Usually the failure is through the PLA getting dragged off the glass by the nozzle. But I'm also experiencing the filament getting jammed in the nozzle A LOT, which is causing jamming halfway though a print - very annoying. But now it's at the point where I won't even attempt a long print for fear it will fail. With a printer this old, undoubtably there's some TLC that needs to happen to tune it back up, so i'd like to know what's the first port of call to look at testing/replacing. Thanks for the help!