This is the 6th engine I've attempted, and the 2nd working one. Unlike my first one it works without using the autopilot function so the controls are freed up. I've included a sub assembly group for the bearings I used, it's painted purple and orange. Group 2 and throttle to start, Group 1 for cylinders trim to about 50% then deactivate Group 1 and throttle down. The tricking part is getting the trim right so that it will run, there's a very specific area on the trim bar where it will run normally and it's around 50%, I don't think it's exactly 50%, but experiment with it and eventually it will run if you get it before the springs explode ( I recommend replacing the springs with invincible ones using the invincible parts mod and that won't be a problem ). Let me know how it works for you and if you have any suggestions.