My previous NH model had an adjustable back panel and it made square bales just fine in very light hay conditions, the 570 won't, V-rake is the solution.
After a myriad of adjustments and modifications including adding an additional rotor, I came to the conclusion that the problem could not be solved.
I raked very large windrows but the real problem was "straw strength" with every component in the sideways transport system running in the same line and breaking a track in the straw and not stuffing it all of the way into left side of the baling chamber.
The straw strength was a seasonal issue because in good seasons with high straw strength the bales were great, but i needed to be able to bale after all seasonal variations. I only had one cutting per year so my entire year's income depended on good bales.....no second chances.
That it could not be solved was confirmed by several other operators nearby that bought machines after me and returned them to the dealer under Australian Consumer Law provisions.
I had nought one early on and had had several good seasons with minimalbanana bale issues.
I had had mine too long and was not eligible t return it, so I sold it and bought a John Deere 348 which although touted as a machine of similar capacity it was of a much lower capacity output, but made square bales without a banana in sight.
I have since retired and sold the farm, so my haymaking days are behind me.
Thank your your interest and replying to such an old thread (nearly 9 years)