Hi. I have a Golf 6 R Stage 2 with OE K04 turbo. It have startet to "whistle". There are some play in the axle (3-4 mm side to side). Have been told, these turbos have Some Play. Car pulls fine, no issues. But selling the car and Think I have to get rid of this whistling. So I'm considering a refurbed OE Borg Wagner. But what are you guys experience? Car has 88.000 km om clock