Shatterhand Stage C editor corrupts its tilesets when swithing between part 1 and part 2

[tehmugi]

loading up Shatterhand's Stage C (settings-shatterhand-3.cs) has an error that causes the other part of the stage garble it's meta-meta tiles (big blocks) when mode is switched.

this is caused by incorrect block settings in the descriptor file,

line 25 in the file defines big block count for part 1 and part 2 and it incorrectly defines part 1 to contain 128 meta meta tiles, this will overflow into the part 2 tilebank and corrupts it, coincidentally, setting mode to part 2 and then changing to part then messes up part 1 big blocks.

for fix, set big block count for part 1 to 84, which is the correct number of blocks for the stage.