diff --git a/format.c b/format.c
index 15c1864e..764210a2 100644
--- a/format.c
+++ b/format.c
@@ -393,7 +393,7 @@ void mm_write_paf3(kstring_t *s, const mm_idx_t *mi, const mm_bseq1_t *t, const
 			mm_sprintf_lite(s, "%d%c", r->p->cigar[k]>>4, MM_CIGAR_STR[r->p->cigar[k]&0xf]);
 	}
 	if (r->p && (opt_flag & (MM_F_OUT_CS|MM_F_OUT_DS|MM_F_OUT_MD)))
-		write_cs_ds_or_MD(km, s, mi, t, r, !(opt_flag&MM_F_OUT_CS_LONG), opt_flag&MM_F_OUT_MD, !!(opt_flag&MM_F_OUT_DS), 1, !!(opt_flag&MM_F_QSTRAND));
+		write_cs_ds_or_MD(km, s, mi, t, r, !(opt_flag&MM_F_OUT_CS_LONG), !!(opt_flag&MM_F_OUT_MD), !!(opt_flag&MM_F_OUT_DS), 1, !!(opt_flag&MM_F_QSTRAND));
 	if ((opt_flag & MM_F_COPY_COMMENT) && t->comment)
 		mm_sprintf_lite(s, "\t%s", t->comment);
 }
diff --git a/lchain.c b/lchain.c
index d20aa3ab..07d7ef80 100644
--- a/lchain.c
+++ b/lchain.c
@@ -282,7 +282,7 @@ mm128_t *mg_lchain_rmq(int max_dist, int max_dist_inner, int bw, int max_chn_ski
 			int64_t j;
 			for (j = i0; j < i; ++j) {
 				q = kmp_alloc_rmq(mp);
-				q->y = (int32_t)a[j].y, q->i = j, q->pri = -(f[j] + 0.25 * chn_pen_gap * ((int32_t)a[j].x + (int32_t)a[j].y));
+				q->y = (int32_t)a[j].y, q->i = j, q->pri = -(f[j] + 0.5 * chn_pen_gap * ((int32_t)a[j].x + (int32_t)a[j].y));
 				krmq_insert(lc_elem, &root, q, 0);
 				if (max_dist_inner > 0) {
 					r = kmp_alloc_rmq(mp);
diff --git a/minimap.h b/minimap.h
index 8eaa1ce7..c795d123 100644
--- a/minimap.h
+++ b/minimap.h
@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <sys/types.h>
 
-#define MM_VERSION "2.27-r1207-dirty"
+#define MM_VERSION "2.27-r1208-dirty"
 
 #define MM_F_NO_DIAG       (0x001LL) // no exact diagonal hit
 #define MM_F_NO_DUAL       (0x002LL) // skip pairs where query name is lexicographically larger than target name
diff --git a/minimap2.1 b/minimap2.1
index aa674d19..4ceee1ee 100644
--- a/minimap2.1
+++ b/minimap2.1
@@ -268,6 +268,11 @@ or more of the shorter chain [0.5]
 Use the minigraph chaining algorithm [no]. The minigraph algorithm is better
 for aligning contigs through long INDELs.
 .TP
+.BI --rmq-inner \ NUM
+Apply full dynamic programming for anchors within distance
+.I NUM
+[1000].
+.TP
 .B --hard-mask-level
 Honor option
 .B -M