diff --git a/src/gui/gui.ts b/src/gui/gui.ts
index 453dabb..5f079fd 100644
--- a/src/gui/gui.ts
+++ b/src/gui/gui.ts
@@ -30,6 +30,8 @@ const DEFAULT_LAYOUT_PROPERTIES = {
   columnSpacing: 90,
   tentacleWidth: 2,
   tentacleSpacing: 5,
+  inOutCPDistance: 0.3,
+  bundleCPDistance: 0.6,
   sampleFontSize: 12,
   showLegend: true,
   phylogenyColorScheme: true,
@@ -86,6 +88,8 @@ export function setupGui(container: HTMLElement, tables: DataTables) {
   layoutFolder.add(layoutProps, "columnSpacing", 10, 200);
   layoutFolder.add(layoutProps, "tentacleWidth", 0.1, 5);
   layoutFolder.add(layoutProps, "tentacleSpacing", 0, 10);
+  layoutFolder.add(layoutProps, "inOutCPDistance", 0.1, 0.45);
+  layoutFolder.add(layoutProps, "bundleCPDistance", 0.1, 1.2);
   layoutFolder.add(layoutProps, "bellTipShape", 0, 1);
   layoutFolder.add(layoutProps, "bellTipSpread", 0, 1);
   layoutFolder.add(layoutProps, "bellStrokeWidth", 0, 3);
diff --git a/src/jellyfish.ts b/src/jellyfish.ts
index 41208d5..b6ca8b2 100644
--- a/src/jellyfish.ts
+++ b/src/jellyfish.ts
@@ -708,7 +708,7 @@ function drawTentacles(
         const iMid = inputCoords.y + inputCoords.height / 2;
 
         // The distance as a fraction of column spacing
-        const inputOutputCPDist = 0.3;
+        const inputOutputCPDist = layoutProps.inOutCPDistance;
         // Position of bezier's control points (input and output)
         const ixc = lerp(ox, ix, 1 - inputOutputCPDist);
         const oxc = lerp(ox, ix, inputOutputCPDist);
@@ -726,7 +726,8 @@ function drawTentacles(
         // points.
         const q = 2;
         const scDist =
-          0.9 / ((slopeMultiplier([ix - ox, iy - oy]) + q) / (1 + q));
+          layoutProps.bundleCPDistance /
+          ((slopeMultiplier([ixc - oxc, iy - oy]) + q) / (1 + q));
 
         const midXCpOffset = lerp(ix, sx, 1 - scDist * 0.5) - sx;
         const midYCpOffset = lerp(iMid, sy, 1 - scDist) - sy;
diff --git a/src/layout.ts b/src/layout.ts
index 990039a..c262fcb 100644
--- a/src/layout.ts
+++ b/src/layout.ts
@@ -19,6 +19,8 @@ export interface LayoutProperties extends BellPlotProperties {
   columnSpacing: number;
   tentacleWidth: number;
   tentacleSpacing: number;
+  inOutCPDistance: number;
+  bundleCPDistance: number;
   sampleFontSize: number;
   showLegend: boolean;
   phylogenyColorScheme: boolean;