before I say anything, you should know that I'm very good at what I do, the problem is gunsmithing is not what I do

I've owned and cleaned many guns meticulously but this is my first 700 and it's my baby!
I've been wanting to scrub the belly of my new-ish m700 for a while but I had heard that once the stock is removed, it must be put back on while using a certain inch/pound pressure on the 2 allan screws holding the stock to the receiver. What tool or tools do I need for this job? size? where do I buy one? Also, what is the desired inch/pound pressure to screw them back in to? and what is the reasoning behind this?
Also, while I'm in the belly of the 700, what should I be cleaning in there and should I be tweaking anything? The trigger is stock and I would prefer to have it around 3 to 3.5 pounds, is this something I should attempt myself?
Comments/suggestions?
Thanks in advance!

I've owned and cleaned many guns meticulously but this is my first 700 and it's my baby!
I've been wanting to scrub the belly of my new-ish m700 for a while but I had heard that once the stock is removed, it must be put back on while using a certain inch/pound pressure on the 2 allan screws holding the stock to the receiver. What tool or tools do I need for this job? size? where do I buy one? Also, what is the desired inch/pound pressure to screw them back in to? and what is the reasoning behind this?
Also, while I'm in the belly of the 700, what should I be cleaning in there and should I be tweaking anything? The trigger is stock and I would prefer to have it around 3 to 3.5 pounds, is this something I should attempt myself?
Comments/suggestions?
Thanks in advance!