Bad luck or bad lineup?

Below is a link to a Mystery Card Dynamite 2000's team. I selected Busch Stadium 2008 as my home field because it is more of a pitcher's park, and then I tried to go with hitters that aren't heavily dependent on ballpark for production.

In short, the season is highly disappointing, particularly my most expensive players. Todd Helton, Lance Berkman, and Curt Schilling are so far off of any of their possible seasons that I wonder if this is just extreme bad luck in the first half of the season. However, being fairly green at Strat, I was hoping some more experienced players would tell me if there is something more obvious that I'm missing due to inexperience.

Originally I had Gary Sheffield, Melvin Mora, and Brad Lidge on this team, but I noticed I'm getting significantly more at bats vs RHP, so I dropped them for Bobby Abreu, Lance Berkman, and Paul Shuey (which leaves me soft on SP's, but I figured defense and a decent ballpark would help offset that).

Team average, OBP, slug, and virtually all other numbers are pathetic, especially from my highest paid players. If this is poor roster construction, I should make moves right away before we hit game 81.

Thank you all for any constructive input you have.

https://365.strat-o-matic.com/team/1743920

I'll copy this to the Mystery Card forum where you may get more of a response.

Bumping for visibility. I started to convince myself that it's a ballpark issue, but my opponents aren't having as many problems scoring runs. Helton, in particular, confounds me. He's on pace for about 10 HR, well beneath his actual performance in any available year.

Sometimes a player is just having bad luck. I dropped a key player in my last league because he was hitting .200 after a significant number of at bats. Someone else picked him up and it turns out he was on his best card. That same player destroyed me in the finals.

If you have a player who doesn't have any bad seasons, you might as well stay with him. No guarantees he'll starting doing better, but chances are he won't continue to stink it up.

One more thing about Helton, however, is that he played for Colorado in their super-hitting-friendly ball park. So his cards, while still good, won't be quite as good as his stats might suggest.