Just dumped all my tranny fluid!

She was a real mess when I got her last July. PO has no clue what he was doing. Front lug nuts were on backwards and all were loose. Vacuum ports on the carb disconnected and not even capped. 3 quarts low on oil and a gallon low on coolant. Tranny was 4 quarts low on fluid and slipping terribly. Drove it home 45 miles on the highway at 40 mph and afraid she was going to come apart. Fixed these things and she ran like a champ except for the slipping in drive thing. Always has shifted kind of hard going into 2nd and winding up a bit high (TPL adjustment?) but smooth and easy going into third. Downshifts were reasonably smooth and at semi-appropriate speed and rpm.