Trying to fix sidewinder x1 only prints to about 100mm z height and just stops?

Hey, so I have a Sidewinder x1, and it only prints to about 100mm on the z height, and it just stops. I've replaced the nozzle, and I'm fed up at this point. I was just going to buy a whole new hot-end assembly.

Part of me has tried and failed to upgrade the hot-end with ABL as well and was wondering if there was a all in one kit that might be slightly easier to fix/ or if I should just say forget it and sell the entire assembly.