Hello all. Im new. My wife and I just bought a house. It has 4 acres. Lots pf grass to cut. We purchased the scotts s2048 from the last owners for $400. Ive mowed 3 times so far. Drive belt broke last week. So bought a new one. Instead of reading any directions I just unbolted the deck from the frame and released the bolts that hang down to get the new belt on. Then I spent an hour trying to reattach the deck. Tried straps and all kinds of other things. Then I realize that thered a tensioner bar lol. Anyway got everything out back together and it works but now the blade is like at the lowest setting amd the adjustment knob doesnt work anymore. Did I break something or what? How do I fix it? Thanks in advance for any help!

Jared