need some suggestion bought at used t1670 with 40in deck guy I bought it off of said it has set all summer and when he started it the mower blades came on slowly with the pto off. I bought it and cleaned the pulleys and also bought a new 5/8x69 belt thinking that would fix the problem well I was wrong thing still does it and I can't figure out why since I see no adjust anywhere. called my Kubota dealer and he told me to check the break pad that stops the blades from turning so I did seems a little low. so I got a 2x4 pused on the break and had my buddy start it to see if that would keep the blades from turning and the belt not to grab well it worked for a few until the belt started to grab and from me holding the break caused the belt to smoke since the blades weren't able to turn I can't figure out why the belt is grabbing with the pto off?????????? if anyone has any thoughts or suggestions id really appricate it because I'm ready to just take it to the Kubota dealer before long