I HAVE A B7200 SERIAL HD52129 WENT TO USE IT TUES. FOR FIRST TIME THIS YEAR AND I HAVE NO FOWARD OR REVERSE.I CHCKED ALL LINKAGES AND ALL SEAM OK. I DID NOTICE A SMALL AMOUNT OF FLUID UNDER REAR OF MACH. I CHECKED THE FLUID LEVEL AND IT IS FULL AND CLEAN.ANY IDEAS? THANKS!!!!!