The thing is, from what i have researched, it seems to be really debatable whether or not you should remove all strings at once or not. I think the neck of the guitar relaxes when strings are removed all at once.
Thanks man! At this point i am not even going to attempt doing anything further. I bought a 16ths ruler and am adjusting each string to 1/16th inch measured from the 17th fret. It seems to be fine for now.
Gibsons are so much easier to mess with.
A fixed bridge is typically more stable and less fussy than any trem bridge guitar, but if you're familiar with the hows and whys of a trem system, they're very easy to adjust for different string tensions.
You can make a jump from .008s to .011s BUT you have to adjust everything else (truss rod, intonations, saddle height and maybe even nut slot width) to compensate for the greater tension AND you have to give the guitar a few days to become stable from the greater tension.
This ain't a 10 minute job. It's at least a 2 day job overall.
Yes, if you're unsure of what to do, take it to someone else who does know and pay them. Let them be responsible for how well it plays.
And I change my string all at once and have done so for 28 years now. If it causes any problems at all, I've yet to see it on my guitars.
Also, yes, the truss rod provides adequate counter-tension which affords us steel string players the ability to change the strings all at once, unlike other instruments including many classical/flamenco/nylon string guitars which typically do not have a truss rod.