diff --git a/lumps/amarande/dm25.lmp b/lumps/amarande/dm25.lmp
new file mode 100644
index 00000000..d53ca772
Binary files /dev/null and b/lumps/amarande/dm25.lmp differ
diff --git a/lumps/catoptromancy/cato_demo2_fdm.lmp b/lumps/catoptromancy/cato_demo2_fdm.lmp
deleted file mode 100644
index 7cf9958b..00000000
Binary files a/lumps/catoptromancy/cato_demo2_fdm.lmp and /dev/null differ
diff --git a/lumps/catoptromancy/cato_demo4_fdm.lmp b/lumps/catoptromancy/cato_demo4_fdm.lmp
deleted file mode 100644
index 9110aa82..00000000
Binary files a/lumps/catoptromancy/cato_demo4_fdm.lmp and /dev/null differ
diff --git a/lumps/catoptromancy/dm23.lmp b/lumps/catoptromancy/dm23.lmp
new file mode 100644
index 00000000..7b80319c
Binary files /dev/null and b/lumps/catoptromancy/dm23.lmp differ
diff --git a/lumps/chungy/chun_demo1.lmp b/lumps/chungy/chun_demo1.lmp
deleted file mode 100644
index 277bf174..00000000
Binary files a/lumps/chungy/chun_demo1.lmp and /dev/null differ
diff --git a/lumps/chungy/dm03.lmp b/lumps/chungy/dm03.lmp
new file mode 100644
index 00000000..465b0730
Binary files /dev/null and b/lumps/chungy/dm03.lmp differ
diff --git a/lumps/demo1_dm.lmp b/lumps/demo1_dm.lmp
index 359a5a0d..0f188b8b 120000
--- a/lumps/demo1_dm.lmp
+++ b/lumps/demo1_dm.lmp
@@ -1 +1 @@
-mp2e/mp_freedm.lmp
\ No newline at end of file
+chungy/dm03.lmp
\ No newline at end of file
diff --git a/lumps/demo2_dm.lmp b/lumps/demo2_dm.lmp
index 04d49f07..d1e10da8 120000
--- a/lumps/demo2_dm.lmp
+++ b/lumps/demo2_dm.lmp
@@ -1 +1 @@
-catoptromancy/cato_demo2_fdm.lmp
\ No newline at end of file
+amarande/dm25.lmp
\ No newline at end of file
diff --git a/lumps/demo3_dm.lmp b/lumps/demo3_dm.lmp
index a6d7dd25..8a5b1570 120000
--- a/lumps/demo3_dm.lmp
+++ b/lumps/demo3_dm.lmp
@@ -1 +1 @@
-chungy/chun_demo1.lmp
\ No newline at end of file
+catoptromancy/dm23.lmp
\ No newline at end of file
diff --git a/lumps/demo4_dm.lmp b/lumps/demo4_dm.lmp
index fb665485..793086a0 120000
--- a/lumps/demo4_dm.lmp
+++ b/lumps/demo4_dm.lmp
@@ -1 +1 @@
-catoptromancy/cato_demo4_fdm.lmp
\ No newline at end of file
+nick/dm18.lmp
\ No newline at end of file
diff --git a/lumps/mp2e/mp_freedm.lmp b/lumps/mp2e/mp_freedm.lmp
deleted file mode 100644
index 7421c0b8..00000000
Binary files a/lumps/mp2e/mp_freedm.lmp and /dev/null differ
diff --git a/lumps/nick/dm18.lmp b/lumps/nick/dm18.lmp
new file mode 100644
index 00000000..bfcffb29
Binary files /dev/null and b/lumps/nick/dm18.lmp differ