RcGuy13 - Thanks for the reply. You can see from this pic here that options are limited.
I thought of another battery that may fit better and what a great excuse to add a lipo to my collection. Will have to look at some next time I visit the LHS.
Investigating further, the battery strap seems to push the battery in towards the drive shaft. I was thinking some mod might need to be applied? Maybe flip the battery around?
The manual mentions moving the foam to the back as an alternate 'front' battery install. This moves weight forward but might help?