Today I checked the transmission fluid on Madeline. The fluid was hot, etc… The level was right between the lines in the stick. Tonight I went to back uphill out a driveway. As I backup the incline increase and suddenly reverse seemed to all but drop out entirely. I was still able to back out onto the road, but there just was not much reverse there. Later, I backed out of another driver that was level…no issue. Forward gears and shifting are fine. Any thoughts???