are they beam or broad reaching? with the main that bagged out, you'd think it's about time to hoist the spin?

Rig tension does look a little slack...

Is your traveler centered? Can't tell because the jib is blocking the view. It may help to reduce the draft of the mainsail by sheeting in (a LOT more) and moving the traveler to leeward a bit more.

If you're getting overpowered, you can drop the traveler some as well (when you're beam reaching)