Hi!
9oz..let's see that's around 260g! Uuh! Heavy!
What you should do is to remove all that lead and start all over again carving out as much wood you can from that heavy fuselage, rear part of it!
Also move the servos and batteries as far forward as possible.
Have you any pictures to show us....it would help us to help you!

During my 30 years in this hobby I have learned a very useful thing ...light airplanes fly much better and hold up/lasts much longer then heavy ones.
I never put lead weights in any of my airplanes to balance them, I rather try everything possible to obtain balance by using my Dremel drum sander or tungsten carbide routers to remove as much wood I can ...and believe me there is a lot of unnecessary wood in every model airplane...!
Ok I admit I use some lead...and that is for axial balancing where I put in some 5-10g ocasionally in the wingtip.
Regards!
Jan K
Sweden