Mine is CGed at 51/4. Ihave the YS 1.20NC installed in it right now but Ihave had the OS 1.20FS pumper in it. Ihave my fuel tank centered over the CG also. If you need them Ican take some photos of how Ihave my gear set up but I have gotten three of these planes to CG without adding any lead at all. On the one Ihave I'm only using one elevator and rudder servo but Ihave built them using two and mounting them aft just under the stab.
How do you have yoyrs set up?? Do you have any photos??
Gene