I finish up with the IMAX2000 antenna. I have decided not to length the antenna. It would help 11 meters TX a bit, but really will not change receive noticeably. The tube amps I run are vintage and do not care. The ICOM7300 does not really want to change the tune nor my auto tuner on 11 meters. It does tune fine to 20, 17, and 15 meters too. Ten meters perfectly resident. I am hearing stations I did not before.
The following pics/videos are the breakdown of the configuration. It a vary good .64 antenna.