I tune on my own also.
Like was said above get the SP101 Trigger Job printed off to start with.
http://www.sp101trigger.com/index.html
I slick up the Hammer Opening and the opening the trigger goes through with 400 grit Wet/Dry glued to a Craft Popsickel stick with my K1 blend for Lube.
I stone the sides of the hammer on the ones with polished sides. I also polish the sides of the Hammer Dog. My brand new December 2013 SP101 has a different hammer.
Polish the Hammer Spring Strut. I normally start with a file to clean up the edges, then work to Emery paper, then polish on a buffer wheel.
I have drill bits for every hole and pin size in a DA Ruger. The hex head ones that are quick change. Turn and work back and forth
by hand to clean up all holes of burs.
Install the Wolff Springs. The 10 pound hammer spring has always worked for me. You can order the Springs form the Shim Guy below.
I normally put .005 Hammer Shims in, .005 Hammer Dog, and .003 Trigger Shims. The shims keeps the Hammer, Trigger, and Hammer Dog in minimum contact on the sides cutting down on friction. Makes a big difference.
NOTE: I use White Assembly Grease on the shims on the hammer to hold them in place during assembly.
Note: The New Hammer Design mentioned above did not have enough clearance for the .005 Hammer Dog Shims. I will get some thinner ones for it my next order.
http://www.triggershims.com/ruger_double_action.html
Go slow, and pay attention. It's Not real hard to work on. Also good practice for cleaning.
My Baby. Lett's Style Fancy Rubber Grips with Fancy Fish Scale inserts by Altamont. Gemini Customs "Little Wonder" Fiber Optic front sight.
Rocky Hill Leather Pancake, F Model Jet Loader and a Big Creek Carrier, which I make. F Model Jet Loaders (J Frame/SP101) are available from Pistoleer and Power Custom.
Bob
ICORE MO2908
Big Creek Kydex