diff --git a/generator.js b/generator.js
index 4215c6b57..d98b7d6bf 100644
--- a/generator.js
+++ b/generator.js
@@ -170,7 +170,7 @@ if (argv.o) {
 	// finalize
 	font.glyf.forEach((g) => {
 		if (g.contours) {
-			Glyph.prototype.cleanup.call(g, 0.25);
+			Glyph.prototype.cleanup.call(g, 0.1);
 			g.contours = c2q.contours(g.contours);
 			for (var k = 0; k < g.contours.length; k++) {
 				var contour = g.contours[k];
diff --git a/glyphs/symbol-math.ptl b/glyphs/symbol-math.ptl
index 7f6f8bdd3..c285265d0 100644
--- a/glyphs/symbol-math.ptl
+++ b/glyphs/symbol-math.ptl
@@ -206,7 +206,8 @@ export : define [apply] : begin
 	
 	sketch # coloncolon
 		set-width FULLWIDTH
-		local radius : linreg WIDTH (0.5 * [adviceBlackness 2.5] * PERIODSIZE / DOTSIZE) UPM PERIODRADIUS FULLWIDTH
+		local radius : Math.min PERIODRADIUS
+			linreg WIDTH (0.5 * [adviceBlackness 3.5] * PERIODSIZE / STROKE) UPM PERIODRADIUS FULLWIDTH
 		local left : mix 0 FULLWIDTH (1 / 4)
 		local right : mix 0 FULLWIDTH (3 / 4)
 		include : Ring (radius * 2 - O) O (left - radius + O) (left + radius - O) true
diff --git a/glyphs/symbol-punctuation.ptl b/glyphs/symbol-punctuation.ptl
index 82968a1aa..90efdfc8d 100644
--- a/glyphs/symbol-punctuation.ptl
+++ b/glyphs/symbol-punctuation.ptl
@@ -882,13 +882,15 @@ export : define [apply] : begin
 	do 'Ellipsis'
 		sketch # onedotLeader
 			set-width FULLWIDTH
-			local radius : linreg WIDTH (0.5 * [adviceBlackness 3.25] * PERIODSIZE / DOTSIZE) UPM PERIODRADIUS FULLWIDTH
+			local radius : Math.min PERIODRADIUS
+				linreg WIDTH (0.5 * [adviceBlackness 3.5] * PERIODSIZE / STROKE) UPM PERIODRADIUS FULLWIDTH
 			include : Ring (radius * 2 - O) O (FULLWIDTH / 2 - radius + O) (FULLWIDTH / 2 + radius - O) true
 			save 'onedotLeader' 0x2024
 
 		sketch # twodotsLEader
 			set-width FULLWIDTH
-			local radius : linreg WIDTH (0.5 * [adviceBlackness 3.25] * PERIODSIZE / DOTSIZE) UPM PERIODRADIUS FULLWIDTH
+			local radius : Math.min PERIODRADIUS
+				linreg WIDTH (0.5 * [adviceBlackness 3.5] * PERIODSIZE / STROKE) UPM PERIODRADIUS FULLWIDTH
 			local left : mix 0 FULLWIDTH (1 / 4)
 			local right : mix 0 FULLWIDTH (3 / 4)
 			include : Ring (radius * 2 - O) O (left - radius + O) (left + radius - O) true
@@ -897,7 +899,8 @@ export : define [apply] : begin
 
 		sketch # ellipsis
 			set-width FULLWIDTH
-			local radius : linreg WIDTH (0.5 * [adviceBlackness 3.25] * PERIODSIZE / DOTSIZE) UPM PERIODRADIUS FULLWIDTH
+			local radius : Math.min PERIODRADIUS
+				linreg WIDTH (0.5 * [adviceBlackness 5] * PERIODSIZE / STROKE) UPM PERIODRADIUS FULLWIDTH
 			local left : mix 0 FULLWIDTH (1 / 6)
 			local right : mix 0 FULLWIDTH (5 / 6)
 			include : Ring (radius * 2 - O) O (left - radius + O) (left + radius - O) true
diff --git a/meta/feature/ligation.ptl b/meta/feature/ligation.ptl
index 788660964..70c14452c 100644
--- a/meta/feature/ligation.ptl
+++ b/meta/feature/ligation.ptl
@@ -331,6 +331,10 @@ export all : define [buildLigations chain-rule lookupOrder commonList features l
 				chain-rule # -<, =<
 					arrowStick ~> [only 'arrow2' : lsx 'fj']
 					less       ~> preserved
+		# <<, >>, <<<, >>>
+		includeLookup
+			.type 'gsub_chaining'
+			.subtables : list
 				chain-rule # <<<
 					less       ~> [only 'arrow2' : lsx 'shiftN0q']
 					less       ~> preserved