If the skidsteer moves even slightly after application of parking break the locking dog will have pressure on it. This is almost guaranteed if parking on any slope. The locking dog will not release until the pressure is removed. Gently creep the machine forward, or back to release pressure on...
Feedbag, I have an S185, so I am not sure if your windows are like mine. On mine the bottom track for the window are removable so the window can be removed. These tracks have slots that the attachment bolts go through. On mine the track can be moved up and down if you loosen the attachment bolts...