ORIGINAL: airborneSGT
If your DA 50 is new dont break it in on a 23x8. Break that thing on a 22x8 and the RPM's will be better. After you run like 5 gallons through it switch on over to the larger prop.
DA told me it was fine to break in on a 23x8 Mejzelik (I needed a bigger, CF prop to balance). They just said no extended verticals and no extended hovering for a while - "It'll do it, it's just hard on the engine" was what they told me exactly.