I would say this is quite normal for a zero fret guitar. I use 10-46 on my Marvin with no ill effects, so I would leave it as is...
As a matter of interests, I
have used 11s on it, but there was no tonal advantage and string bending was much tougher... and I had to set up the trem and the bridge all over again!
![Uber Geek :ugeek:](./images/smilies/icon_e_ugeek.gif)