Hi Robbietee
Your topic might be more "seen by EM-Guys" when it would be in here https://pinside.com/pinball/forum/forum/tech-em .
I like this : http://user.xmission.com/~daina/tips/pub/emTips.html --- some tips are "so so" - but many are good. See this: http://user.xmission.com/~daina/tips/pub/tip0399.html - greetings Rolf