Ok si u have a Jd 6675 but am told its basicly a new holland lx665 machine. Im new to it and may have bought something that needs more then i anticipated. but at this point i want to fix it. Anyway when i first got the machine i noticed making sharp turns it would growl and struggle and bog the engine down. didnt matter if the idle was low or high. But will travel strait forward and reverse with no problems. WAs more noticable on the pavement then in the grass when turning sharp. The bushings and pins were shot in the boom and ive now replaced those and tried to dig a pile of dirt with it . Ive noticed it seems weak driving into the pile even strait. Tires wont spin it would just tart growling. If that makes sense. any help on where to begin? I hae a service manual but without gauges its hard to test alot of the major componets.