I have a 3 year old Bx23s-1 that has slowly been leaking fluid out of both rear tires. Bought tractor with tires loaded. measuring information is very difficult as valves at 12 spits out nasty very salty clear liquid. Finally figured out If I do it quickly I can get a reading. Found them both a bit low. Have to over inflate a bit and the leaking slows but still have wet tires at the lowest point. Tires clearly say rimguard (beet juice) Dealer claims to have installed a product called ballast star. Anybody have experience like this?