He flys inverted, but not very low

Im using a front tank posision and ill make up a tray out of some scrap and cable tie the tank (sulivan 8oz, hate those slec ones[:'(]) one ive wrapped it in some fantastic foam. ill use the battery to balance the plane as i hate ballest[&:] went down to the model shop to get some things and remembered i needed some wood for my wing but fogot what thickness it was! AGHHH