As money becomes available...shop around. Some of the simple stuff, calipers, dial indicator, etc... can be purchased through discount chains. Provided you don't let the kids play with them or toss them around they work just fine. Other tools such as the dial indicator torque wrench and differential bearing removal tool can be found a tprices considerably cheaper than the Differential and 4x4 store sources. You would be amazed at what you can find on Amazon and Ebay. There is a lot of good literature available on the web, I was able to pull Dana Spicer axle service manuals off of Spicer's website. There is no majic in the maunals, they're very clear..to increase backlash do this, to decrease pinion depth do this, very straight forward. I am no pro, expert etc...not even close. I just got tired of the run-around and crappy workmanship. The investment wasn't all that much, especially if I spread it out over a couple of pay days, cheaped out where I could.....blah blah I am sure you get my point.