Actually, I was looking for some corrupted scrambled sectors, looks like it's not the case
Why not to use PR dump only? I'm not sure about moving the sectors, looks like the 2nd track pregap contains some data sectors here, if so - they should be scrambled, you can't retrieve the proper pregap from isobuster's dump of the first track, then. You need to extract the track manually after dumping the whole CD with cdtoimg (dumps all the sectors in scrambled mode). According to the subs, 257871 is the last data sector, so the data track should be 257872 sectors long, or 606,514,944 bytes. Sectors 257872 and 257873 contain data, according to your previous copypastes, but they belong to the audiotrack, according to the subs.