I have a pista that I cheaped out on and went with a 42T rocket front chainring. The chain slack on the long rides is incredibly annoying!

I decided to try spending a bit more money on a nicer sugino messenger 46T chainring and added a new chain. Cranks on the bike are 130BCD that is why I went with the sugino messenger chainring. So its a 1/8 front and 3/32 rear cog, but I still have this annoying chain slack. Now I think the chainline is jacked!

What should be my next step? Should I try replacing the crankarms or just go with miche primato crankset and call it a day? Or is chainslack something that can never be completely removed.