It's a 3:1 ratio on the fuselage. 1 part in front of the CG and 3 parts behind the CG. So 1oz of tail weight costs you 3oz on the nose, sometimes more. Why not quit thinking of ways to make the nose HEAVIER and start thinking about ways to make the tail LIGHTER? An added benefit to getting the CG correct is an overall lighter airframe. Win/Win...... instead of a heavy compromise.

Cut the covering off the fuselage and get out your dremel. Concentrate on the area behind the wing saddle. You can easily dremel out 1oz or 2oz with a rough grit sanding drum. 2oz out of the tail will save you 6oz or more in the nose. Remember it's a 3:1 ratio. Can you get 3oz out of the tail? How about 4oz?

I know you do a nice job with covering, Jim. And I know it's time consuming and expensive. But tossing a little covering in the trash now will yield a better flying plane in the long run.

Tip for the next build:
Frame it all up and do a complete assembly on the bench, but without the covering. Mount your servos, linkages, engine, battery, switch. Mock the whole plane up on the bench. Check the balance. Adjust until it's noticeably nose heavy. Now cover it and glue in your hinges. You'd be amazed how heavy monokote and hinge glue is. Set it up just a little more nose heavy than you think, when you're mocking it up on the bench for the first time.