so i installed the spool in the diff. and im concerned if the ring and pinion are lined up correctly. how will i know if its set right still?

The correct way to do it is use some chalk to make sure your teeth mesh properly.  If you check out acksfaq.com and do a search for locker there are several write-ups.

http://www.acksfaq.com/pdfs/Backlash.pdf

I realize you've already installed your mini-spool, but I wrote a step-by-step on it last year...maybe it will answer a question or two for you:
http://www.zukiworld.com/forum/build-diaries-how-to-diy/how-to-install-a-locker-or-mini-spool-step-by-step-with-pics/msg210432/#msg210432

I realize you've already installed your mini-spool, but I wrote a step-by-step on it last year...maybe it will answer a question or two for you:
http://www.zukiworld.com/forum/build-diaries-how-to-diy/how-to-install-a-locker-or-mini-spool-step-by-step-with-pics/msg210432/#msg210432

Nice Gem there Matt...

I added that to the FAQ. Common Questions

... and popped ya one tech prestige point.
Thanks, Eric

so i installed the spool in the diff. and im concerned if the ring and pinion are lined up correctly. how will i know if its set right still?

As long as you marked the position of the carrier bearing adjusters and placed them back in the exact same location as before, then the ring and pinion backlash and carrier bearing preload is set correctly (assuming they were set at factory specs before removal).
If you didn't mark anything before teardown and just threw it back together, then it is very likely that they are not set right.