Newbie looking for some advice on two teams

Hi. I'm rather new to SOM Online and am looking for some help with my two active teams.
70's team
http://fantasygames.sportingnews.com/baseball/stratomatic/70s/team/team_other.html?user_id=6222
Downing's card is 1979.
I dropped Knepper, Eckersley, Braun, Rose, Winfield and Lynn over the weekend and added Tiant, Marichal, Gamble, Billy Williams, Dave Parker, and Otis. Should I make any more changes? Any room for improvement? Trying to at least contend in my division or break .500. (I can dream, right?)
ATG III team
http://fantasygames.sportingnews.com/baseball/stratomatic/atg3/team/team_other.html?user_id=19936
I've got about $1,000,000 in cash and need to spend it. I don't think I've made any transactions since the season started.
70's team
http://fantasygames.sportingnews.com/baseball/stratomatic/70s/team/team_other.html?user_id=6222
Downing's card is 1979.
I dropped Knepper, Eckersley, Braun, Rose, Winfield and Lynn over the weekend and added Tiant, Marichal, Gamble, Billy Williams, Dave Parker, and Otis. Should I make any more changes? Any room for improvement? Trying to at least contend in my division or break .500. (I can dream, right?)
ATG III team
http://fantasygames.sportingnews.com/baseball/stratomatic/atg3/team/team_other.html?user_id=19936
I've got about $1,000,000 in cash and need to spend it. I don't think I've made any transactions since the season started.