My friend has a 300 or 250 king quad, had many over the years and keeps one that is in excellent condition. However, he has been a Honda Rubicon and now a brand new Rincon rider. Loves them. Did you ever decide?
Once you hit a 10 post count, you should be able to download. https://www.quadcrazy.com/announcement/16-requirements-to-access-downloads-read-here/
Have you checked all fuses?