340 windage tray to oil pan edge fitment

Windage tray must be messed up. Try Loosening the attaching bolts and get it to clear.
Mopar windage tray from classic industries.
Probably your problem. Never had a problem like you are having. I've had three or four 340's and put windage trays on everything I build. including a /6. Try finding a used original windage tray.