Here ya go:

Appending "/1000" to a miner's username will increase the difficulty of producing a P2Pool share to at most 1000. This is useful to large miners because doing this can make it easier for small miners while minimally impacting the large miners themselves. See recommended values.

Appending "+1" (for example) after that will make P2Pool always give your miners work with a difficulty of 1

Try appending something like +0.0003 to your username/address on your miner.

For example: 4SkGv3gbnsxNNCWG5rieeKQBgsLgfbEgyd+0.0003

This should lower your share diff. and show you more results.