Cheers and Marry X, TEs fitted to my rudder fins, some trimming was needed for seating of swing wings all the way back and battery bay enlarged to accommodate lipos. AUW will vary between 5650 to 6350 grams with 4-6Ah sets. With the larger packs I might have CG issue so might have to compromise somewhere in between and shorter flight time unless I ad on my aft CG correction probes.