I have the TRD
coilovers on my car. I looked at the threads of each strut and measured the "turns" that they specify, as the number of threads that I went up. I/E when you put them on, count the threads up to the 16th thread (if that is what was recommended, i cant remember) and make a mark with a Sharpie. That way, when you are turning the collar up and down, it goes to this mark. --Thats how I did it anyway... Oh, be sure to be careful if you are doing this yourself, and you will save yourself another set of tires if you get an alignment soon thereafter. Not right away though, because they may settle a bit. Nice choice on coilovers by the way. Still maintains a smooth ride, and NO DIPPING INTO TURNS WOOOOHOOOO!!!!