Hi everyone first time poster here. I recently purchased a JD 430 with a 60" deck and a 54" front blade. I have ordered an operators manual from Deere but it with take a week or two to get it and need some help now so I can use the mower. Looked extensively on this site but could not find my question already answered. The question deals with the deck lift system. I have adjusted the screw on the back of the mower for the hydraulic cylinder to have full movement. Even with that the highest i can get the blades off the ground is 3-3/4". I did notice where the brackets bolt to the rear of the deck there were holes below them which I think would allow more lifting height. Any information on this would be great. Sorry I'm so long winded...