This is a good design for an effector to use on your rod stock max if you are converting over to the Kraken 4 nozzle hot end. https://www.youtube.com/watch?v=0IX8_orxa74https://www.youtube.com/watch?v=m7VNp8OsTyc&feature=youtu.besuggest printing this out of ABS plastic so that it holds up to higher temps. It will shrink though so you will need to print it at 101% use a 1/8 inch drill bit to clean up the screw holes as well as for the rods. I had to chuck the drill bit only 1/8 inch in in order to clean thew the entire part but it works well. Also when this part is printing I looks very big compared to your current effector but the size is accurate. Check swivel ends for fit and sand if necessary. I only had to sand a very small amount on it. Let me know what you guys think.