diff --git a/fake.cpp b/fake.cpp
index 66d4de2a..d33c9999 100644
--- a/fake.cpp
+++ b/fake.cpp
@@ -92,6 +92,10 @@ EX namespace fake {
 
     hyperpoint get_corner(cell *c, int cid, ld cf=3) override { 
 
+      if(GOLDBERG && S3 == 4 && gp::param.first == 1 && gp::param.second == 1) {
+        return ddspin(c, cid) * spin(-M_PI / c->type) * lxpush0((c == c->master->c7 ? cgi.hexf : cgi.hexvdist) * 3 / cf);
+        }
+
       if(embedded_plane) {
         geom3::light_flip(true);
         hyperpoint h = get_corner(c, cid, cf);
@@ -113,6 +117,10 @@ EX namespace fake {
       }
 
     transmatrix adj(cell *c, int d) override {
+      if(GOLDBERG && S3 == 4 && gp::param.first == 1 && gp::param.second == 1) {
+        c->cmove(d);
+        return ddspin(c, d) *  lxpush(cgi.crossf) * iddspin(c->move(d), c->c.spin(d), M_PI);
+        }
       if(embedded_plane) {
         geom3::light_flip(true);
         transmatrix T = adj(c, d);
diff --git a/geometry.cpp b/geometry.cpp
index f0a98270..70fe2404 100644
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -694,17 +694,18 @@ void geometry_information::prepare_basics() {
     2 * hdist0(mid(xspinpush0(M_PI/S6, hexvdist), xspinpush0(-M_PI/S6, hexvdist)))
     : hdist(xpush0(crossf), xspinpush0(TAU/S7, crossf));
 
-  if(fake::in() && BITRUNCATED) {
+  if(fake::in() && (BITRUNCATED || (S3 == 4 && gp::param.first == 1 && gp::param.second == 1))) {
     vector<pair<ld, ld>> vals;
-    vals.emplace_back(S7, fake::around / 3);
-    vals.emplace_back(S3*2, fake::around * 2 / 3);
+    int s6 = BITRUNCATED ? S3*2 : S3;
+    vals.emplace_back(S7, BITRUNCATED ? fake::around / 3 : fake::around / 2);
+    vals.emplace_back(s6, BITRUNCATED ? fake::around * 2 / 3 : fake::around / 2);
     ld edgelength = euclid ? 1 : arcm::compute_edgelength(vals);
 
     // circumradius and inradius, for S7 and S6 shapes
     auto c7 = asin_auto(sin_auto(edgelength/2) / sin(M_PI / S7));
-    auto c6 = asin_auto(sin_auto(edgelength/2) / sin(M_PI / S6));
-    auto i7 = hdist0(mid(xpush0(c7), cspin(0, 1, 2*M_PI/S7) * xpush0(c7)));
-    auto i6 = hdist0(mid(xpush0(c6), cspin(0, 1, 2*M_PI/S6) * xpush0(c6)));
+    auto c6 = asin_auto(sin_auto(edgelength/2) / sin(M_PI / s6));
+    auto i7 = hdist0(mid(xpush0(c7), cspin(0, 1, TAU/S7) * xpush0(c7)));
+    auto i6 = hdist0(mid(xpush0(c6), cspin(0, 1, TAU/s6) * xpush0(c6)));
 
     // note: tessf and hcrossf remain undefined
     crossf = i7 + i6;
diff --git a/goldberg.cpp b/goldberg.cpp
index b5ce2233..210ed38c 100644
--- a/goldberg.cpp
+++ b/goldberg.cpp
@@ -733,6 +733,7 @@ EX namespace gp {
       next = point3(x+y/2., -y * sqrt(3) / 2, 0);
       ld scale = 1 / hypot_d(2, next);
       if(!GOLDBERG) scale = 1;
+      if(fake::in() && x == 1 && y == 1) scale = 1;
       cgi.crossf *= scale;
       cgi.hexhexdist *= scale;
       cgi.hexvdist *= scale;