Hi, i have a mountain bike and every time I ride it, i have my knees hurting in the front of the rotula. Also my hands became numb after 15-20 minutes of riding. I'm 183 cm height, 89.5 cm inseam. The saddle height is at 89 cm , mesurements from the pedals ( not the BB). The saddle is set following the knees over the pedals technique (the line is front of the knees ). Can someone help me please. I attached a photo with the information of the bike, it's the XL size. I need your help please