diff --git a/font-src/glyphs/marks/above.ptl b/font-src/glyphs/marks/above.ptl
index a85dea08e..638a24752 100644
--- a/font-src/glyphs/marks/above.ptl
+++ b/font-src/glyphs/marks/above.ptl
@@ -47,8 +47,8 @@ glyph-block Mark-Above : begin
 		include : DotAt (markMiddle + markExtend) aboveMarkMid markDotsRadius
 
 	define [RingDims] : begin
-		local radiusIn  : AccentHeight * 0.2
-		local radiusOut : radiusIn + markFine * [linreg 16 2 90 1.75 (markHalfStroke * 2)]
+		local radiusOut : AccentHeight * [linreg 16 0.5 90 0.75 (markHalfStroke * 2)]
+		local radiusIn  : radiusOut - markFine * [linreg 16 2 90 1.75 (markHalfStroke * 2)]
 		return [object radiusIn radiusOut]
 
 	create-glyph 'ringAbove' 0x30A : glyph-proc
@@ -60,7 +60,6 @@ glyph-block Mark-Above : begin
 		include : difference
 			DotAt markMiddle aboveMarkMid radiusOut
 			DotAt markMiddle aboveMarkMid radiusIn
-		include : ApparentTranslate 0 (-markFine * 0.75)
 
 	create-glyph 'dblRingAbove' 0x1AB2 : glyph-proc
 		set-width 0
diff --git a/params/parameters.toml b/params/parameters.toml
index c8c69613b..f64ce0236 100644
--- a/params/parameters.toml
+++ b/params/parameters.toml
@@ -30,7 +30,7 @@ slopeAngle = 0     # slope angle, in degrees.
 derivedSlopeAngle = 10 # Slope angle of derived letters requiring italics
 
 accentWidth = 200       # Width of accent marks.
-accentClearance = 48    # Vertical clearance of accent marks to the base.
+accentClearance = 80    # Vertical clearance of accent marks to the base.
 accentHeight = 140      # Height of accent marks.
 accentStackOffset = 205 # Offset height of accent mark stack.
 overshoot = -8          # Vertical overshoot for arcs.