I just installed the servo with the blue spring from the 4l60ehd2 kit that go into the servo area. I didn't install the gold rings. It shifts alot better than before. It doesnt really shift hard it seems like it just shifts quicker. I'll be installing the shift kit tomorrow so hopefully everthing goes well. I am still unsure how many of the spacers/ washers I'm going to use for shift firmness. I read thta installing all 3 would damage the trans what do you guys think?