Follow along with the video below to see how to install our site as a web app on your home screen.
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Just in case you need help from @security0001 website:Just make sure your B+ is 120VDC before dialing in your width coil. Otherwise you will be unnecessarily adjusting the coil to compensate for a B+ that could be too high.
www.arcadepartsandrepair.com

that ferrite slug is a M6x1.0 in that coil in the video and i have a new slug which isn't released to the public until later this year and it will be a M6x0.75 so you can get a tap if you want threads the whole length of the tube on the coil. BUT: if you put an inductance meter on that coil its range is approximately 75uH to 210uH so if you adjust the travel of the ferrite slug in the coil you will see it will read from the top going to the bottom 75uH to 210uH then back to 75uH and to 210uH a second time so you don't need the ferrite to go to the top of the coil and its full adjustment range can be had by just adjusting it in the bottom where the threads are so you don't need more threads.This video from Mike might be helpful on getting the width coil core unstuck.... although it looks like your core is stuck at the top. He talks about cutting new threads form the bottom on a new one.
Mike's Amateur Arcade Monitor Repair