I think I have an older 610, and I got the engine running like a champ. Now, I have a hydraulic fluid leak at the variable speed drive. The belt does not spin at idle, and when I push the hydraulic lever in the cab, hydraulic fluid slings all over. I have included a photo that might explain more. Can anyone let me know what seal kit to purchase or where to get it? It seems like there are several out there, and I want to be sure I get the correct one. The fluid looks like a milkshake, and I will change it once I get it operational—many thanks in advance.