diff --git a/dataflow_neuro/coders.act b/dataflow_neuro/coders.act
index ab930d7..b47ae97 100644
--- a/dataflow_neuro/coders.act
+++ b/dataflow_neuro/coders.act
@@ -553,6 +553,42 @@ namespace tmpl {
 				rsb[j].supply = supply;
 			)
 
+			// Add buffers on output req lines
+			a1of1 _outx[Nx], _outy[Ny];
+			BUF_X4 out_req_buf_x[Nx];
+			(i:Nx:
+				out_req_buf_x[i].vss = supply.vss;
+				out_req_buf_x[i].vdd = supply.vdd;
+				out_req_buf_x[i].a = _outx[i].r;
+				out_req_buf_x[i].y = outx[i].r;
+			)
+			BUF_X4 out_req_buf_y[Ny];
+			(i:Ny:
+				out_req_buf_y[i].vss = supply.vss;
+				out_req_buf_y[i].vdd = supply.vdd;
+				out_req_buf_y[i].a = _outy[i].r;
+				out_req_buf_y[i].y = outy[i].r;
+			)
+			// Add buffers on output ack lines
+			// Note that this should be generalised.
+			// And probably won't even be done by ACT/innovus anwyay
+			// TODO: do it properly with sigbufs?
+			BUF_X4 out_ack_buf_x[Nx];
+			(i:Nx:
+				out_ack_buf_x[i].vss = supply.vss;
+				out_ack_buf_x[i].vdd = supply.vdd;
+				out_ack_buf_x[i].a = outx[i].a;
+				out_ack_buf_x[i].y = _outx[i].a;
+			)
+			BUF_X4 out_ack_buf_y[Ny];
+			(i:Ny:
+				out_ack_buf_y[i].vss = supply.vss;
+				out_ack_buf_y[i].vdd = supply.vdd;
+				out_ack_buf_y[i].a = outy[i].a;
+				out_ack_buf_y[i].y = _outy[i].a;
+			)
+
+
 
 			// Create handshake grid 
 			pint index;
@@ -563,8 +599,8 @@ namespace tmpl {
 					neurons[index].supply = supply;
 					neurons[index].reset_B = rsb[j].out[i];
 					neurons[index].in = in[index];
-					neurons[index].outx = outx[i];
-					neurons[index].outy = outy[j];
+					neurons[index].outx = _outx[i];
+					neurons[index].outy = _outy[j];
 				)
 			)
 
@@ -579,13 +615,13 @@ namespace tmpl {
 			sigbuf<Nx> rsb_pd_x(.in = reset_B, .supply = supply);
 			(i:0..Nx-1:
 				[ N_dly = 0 ->
-					pd_x[i].in = outx[i].a;
+					pd_x[i].in = _outx[i].a;
 				[] N_dly >= 1 ->
 					dly_x[i].supply = supply;
-					dly_x[i].in = outx[i].a;
+					dly_x[i].in = _outx[i].a;
 					pd_x[i].in = dly_x[i].out;
 				]
-				pd_x[i].out = outx[i].r;
+				pd_x[i].out = _outx[i].r;
 				pd_x[i].reset_B = rsb_pd_x.out[i];
 				pd_x[i].supply = supply;
 			)
@@ -595,13 +631,13 @@ namespace tmpl {
 			sigbuf<Ny> rsb_pd_y(.in = reset_B, .supply = supply);
 			(j:0..Ny-1:
 				[ N_dly = 0 ->
-					pd_y[j].in = outy[j].a;
+					pd_y[j].in = _outy[j].a;
 				[] N_dly >= 1 ->
 					dly_y[j].supply = supply;
-					dly_y[j].in = outy[j].a;
+					dly_y[j].in = _outy[j].a;
 					pd_y[j].in = dly_y[j].out;
 				]
-				pd_y[j].out = outy[j].r;
+				pd_y[j].out = _outy[j].r;
 				pd_y[j].reset_B = rsb_pd_y.out[j];
 				pd_y[j].supply = supply;
 			)
@@ -611,14 +647,14 @@ namespace tmpl {
 			(i:Nx:
 				keep_x[i].vdd = supply.vdd;
 				keep_x[i].vss = supply.vss;
-				keep_x[i].y = outx[i].r;
+				keep_x[i].y = _outx[i].r;
 			)
 
 			KEEP_X1 keep_y[Ny];
 			(j:Ny:
 				keep_y[j].vdd = supply.vdd;
 				keep_y[j].vss = supply.vss;
-				keep_y[j].y = outy[j].r;
+				keep_y[j].y = _outy[j].r;
 			)
 		}