fix index for scaled

src/sourmash/minhash.py

@@ -289,6 +289,10 @@ def __getstate__(self):
         # note: we multiple ksize by 3 here so that
         # pickle protocols that bypass __setstate__ <coff numpy coff>
         # get a ksize that makes sense to the Rust layer. See #2262.
+        # CTB/NTP note: if you add things below, you might want to put
+        # them at the end, because we use internal indexes in a few places.
+        # see especially `_set_num_scaled()` in sig/__main__.my.
+        # My apologies.
         return (
             self.num,
             self.ksize

src/sourmash/sig/__main__.py

@@ -102,7 +102,7 @@ def _set_num_scaled(mh, num, scaled):
     # Number of hashes is 0th parameter
     mh_params[0] = num
     # Scale is 8th parameter
-    mh_params[8] = _get_max_hash_for_scaled(scaled)
+    mh_params[10] = _get_max_hash_for_scaled(scaled)
     mh.__setstate__(mh_params)
     assert mh.num == num
     assert mh.scaled == scaled