http://www.amazon.com/gp/product/B000GZP270/ref=gno_cart_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER Is this the correct wrench to adjust the shock? I know the 68 mm and 87 mm lock ring size is correct but is the 8 mm notch correct? Where is the best prices for OEM parts? I have a 6th Gen. Thanks for any help.