Well, I decided to go the hard way and did what Inconel did.

It's hard to understand why SM puts the fuel tank 4in. ahead of the CG. Maybe it is because they recomend a very forward CG

I cut of the intakes and install the fuel tank near the CG. That way it will have less to none CG variation during the flight. Also because I have a heavy cockpit with double animatronic pilots, I need a bit of weight in the rear, so decided to move the turbine a bit backwards. My goal is to have a CG at 215-220mm without any weight

I'll post pics next time.

Regards

Nuno