yeah thats the hard part. all these settings interacting with each other compounding effects.
one setting causing a problem but only because another setting is set. that guide you guys posted is VERY helpful.
I am starting to think my printer is actually work pretty well and that some of these settings are to compensate for printing/filament "issues" and if you do not have those issues then the corrective setting actually causes problems.
for example I have zits. - retract start fixed the zits but may have interfered with another setting to great gaps under some conditions. very confusing.
I have not been able to rest any of this yet since I am in the middle of a 50 hours print. :-)