I Am Having Trouble With My 96' Jetta. It Idles Rough In Drive And Reverse. I Have Been Through Everything. It Has A Sealed Auto Tranny. Should I Buy A Vag-com Tool. If So Do The Ones On E-bay Work. There Only Like $60-$100. Then You Download The Software. Where I Saw At Ross-tech Its Like $300. Please Let Me Know If This Might Help, And Alsowere To Buy. Thanks.