Since we all plan to land with something in the main tank I’ve never understood balancing with the tank empty! That is especially true when ALL the fuel is in front of the balance, it will have a huge influence. Mine flys great with the heavy P-60, knife edge horizon to horizon without full power or full rudder. It feels perfectly balanced. I’m sure mine is towards the back of the wing spar without the canopy, with landing fuel in the main tank.
I put my fingers under the lip and lift…chuck the fancy load sensor chocolate tea pots in the trash 😉