Do these stats indicate major bubble leak?

[mjm]

After 500 $33's sng's my finish distribution is as follows:
1st:11.6%
2nd:14%
3rd:14%
4th:14%
5th:14%
6-10th:32.4%

ROI:16.3%

The number of 4ths and 5ths is a concern, especially as there is not a corresponding number of 1sts to go with them.

Do these figures suggest a serious leak either around the bubble or once ITM (or both).

I realise the sample is v small but I don't get to play to often, and if these stats suggest a major problem would like to address it now, rather than wait until I've played thousands of SNG's.

[runner4life7]

I think you will probably see more 1sts in the future, but the 4ths and 5ths dont seem too high to me because thats what aggressive bubble play will give you. 16.3% ROI is pretty good at the 30s so all I can say is keep it up.