I just got a 706 in need of a mcv pump I believe due to lack of steering and inability to get it to prime. The price was right though so I'm not to worried about that what I am worried about is a noise that started shortly after I got it while trying to prime the mcv. It's what to me is a trans knock sounds like its right under the clutch pedal and I only hear it in neutral, engine speed does not affect it much it's just a slow steady knock. To me it's rather loud and it's only with the clutch out push in the clutch and it stops. I know very little about this tractor and have ordered a manual but thought in the meantime I would run it buy you guys and see what you think. Any advice or ideas would be greatly appreciated. Thanks in advance.