checking shaft play is only half of the story about telling whether a turbo is in good nick or not, Another way of checking is actually looking at the whole rear wheel of a turbo, a mate recently bought a gt3540 off a typhoon from ebay, shaft play was in top shape, and the wheels looked fantastic, Taking the rear housing off told a different story. The whole rear of the wheel was chewed away leaving a very f**ked turbo. from the outside the wheel looked to be in top shape. Obviously your is fine craig lol i just wanted to tell a story lol.