Keep reading what is out there Dan. Here are some articles in case you haven't found these:
http://garyseronik.com/a-beginners-g...o-collimation/
https://www.cloudynights.com/article...scope-v4-r2599
A good autocollimater is a good step forward.
https://stargazerslounge.com/topic/1...utocollimator/
Perhaps a set of Catseye tools? Supplement a cheshire with a quality XLK autocollimator? And you might wish to change your primary mirror centre marker if it is the original circular style.
https://www.catseyecollimation.com/
DO you trust Mike?
http://www.pbase.com/strongmanmike20...th_the_catseye
As has been said elsewhere, get a strong cup of coffee and tackle Jason Khadder's Cloudy Nights thread:
https://www.cloudynights.com/topic/2.../#entry3189737