Long story but back in my former life as a session musician, I had an artist deal with Tama drums. I had them make me a Starclassic Maple version of his Signals kit. 6" 8", 10", 12" Concert toms, 12", 13", 15" Racks, 18" Floor, 22" and 24" gong bass drums. (2) 14" x 24" bass drums, 13" and 14" wood Timbales, 5" x 14" Snare and a 18" bass drum for the "back forty" kit. I set it up maybe 2 times and sold it for more than I got it for. Anyway, when I did set it up, from a distance I too thought the bass drums looked like 22"'s and they were definitely 24"'s. I'm pretty sure he's playing 24"'s in this kit and that 23" bass drum on the R40 kit is simply elevated and closer so it looks bigger. I'm highly curious about 2 things. 1) Why did he go for that 8" x 20" frame gong drum. I'm really curious as to how that sounds. It's not like more depth would have taken up any important room on the kit. 2) Surprised that he went with standard LP Timbales. I would have thought DW would have made him some brass or steel shell timbales out of snare drum shells. Hope we get some info and professional pics (front and driver's seat) before the tour is over.