After some years of using seperate beams for 20-15-10 and 17-12 (see the left picture below) I decided this bunch of aluminum out of my tower. After all these were full-size 2 element beams. I have replaced these beams with 1 adjustable 2 element full size beam (Ultrabeam 6-40) which operates from 40 to 6 m. Ofcourse on 40 and 30 m acting as a dipole but this dipole is 18 m high and turnable. It gives me a lot more DX on 40 and 30 now.