Looking on the TS Stations offer of the 15400 you mention that the Blue "V3" is even a but more crisp than the V2J...
have a look:
[video]https://www.ts-stations.cn/goods.php?ProId=22247[/video]
TS station lists it as 10mm thick. I wonder if that is true, if it is there would be mo reason to modify it!