Good Morning, the last couple of days my 91 Ford F150 XLT Lariot, 302 V8, Automatic trans w/Electric O/D button on dash, has started to do a not so smooth up shift from 1st to 2nd to 3rd. It goes into O/D smooth. It is a solid shift with a slight jerk. I can manualy shift it and the shift is smooth. The down shift is smooth. Can anyone give me some advise. Thank you in advance.