Here's the contents of the YAMADA.BIN file, with annotations
66 02 00 00 00 00 00 00 67 02 00 00 D2 33 00 00
0266h = LBA of YAMADA.BIN in hex 0267h = LBA of WINDOW.BIN 33d2h = Size of WINDOW.BIN
6E 02 00 00 68 57 00 00 1B 45 00 00 76 04 00 00
026Eh = LBA of KERNEL.BIN 5768h = length of KERNEL.BIN 451Bh = LBA of BROM.X 0476h = Length of BROM.X
1C 45 00 00 56 32 00 00 23 45 00 00 12 FD 01 00
451Ch = LBA of TITLE.BIN 3256h = length of TITLE.BIN 4523h = LBA of BATTLE.X 01fd12h = Size of BATTLE.X
63 45 00 00 40 16 00 00 66 45 00 00 00 20 04 00
4563 = LBA of BATINI.X 1640h = Length of BATINI.X 4566h = LBA of SCENE.BIN 042000h = Length of SCENE.BIN
EA 45 00 00 1E 0E 00 00 EC 45 00 00 40 16 00 00
45EAh = LBA of BATRES.X 0e1eh = Length of BATRES.X LBA of CO.BIN CO.BIN length
Using this information, it should be possible to get over the the space limitations on the KERNEL and SCENE .BINs by inserting the file somewhere else on the ISO and altering the YAMADA info accordingly.