diff --git a/func/Module_precisely_align.py b/func/Module_precisely_align.py
index 3ce01d5..cab4006 100644
--- a/func/Module_precisely_align.py
+++ b/func/Module_precisely_align.py
@@ -9,7 +9,7 @@ from PySide6.QtWidgets import QMessageBox, QMainWindow, QApplication, QButtonGro
 from matplotlib import gridspec, patches
 from matplotlib.backends.backend_qt import NavigationToolbar2QT
 from matplotlib.backends.backend_qtagg import FigureCanvasQTAgg
-from matplotlib.ticker import FuncFormatter
+from matplotlib.ticker import FuncFormatter, ScalarFormatter
 from numpy import (diff, where, correlate, corrcoef, searchsorted, sum as np_sum, max as np_max, min as np_min, arange,
                    array,
                    append, delete, abs as np_abs, argmin as np_argmin, argmax as np_argmax, asarray)
@@ -477,21 +477,35 @@ class MainWindow_precisely_align(QMainWindow):
             else:
                 return f"{int(x - self.data.approximately_align_pos)}"
 
+
+
         if sender == self.ui.pushButton_input:
             self.gs = gridspec.GridSpec(2, 1, height_ratios=[1, 1])
             self.fig.subplots_adjust(top=0.95, bottom=0.05, right=0.98, left=0.05, hspace=0.15, wspace=0)
             self.ax0 = self.fig.add_subplot(self.gs[0])
             self.ax0.grid(True)
-            self.ax0.xaxis.set_major_formatter(Params.FORMATTER)
-            self.ax1 = self.fig.add_subplot(self.gs[1], sharex=self.ax0, sharey=self.ax0)
+            # self.ax0.xaxis.set_major_formatter(Params.FORMATTER)
+            self.ax1 = self.fig.add_subplot(self.gs[1], sharey=self.ax0)
             self.ax1.grid(True)
-            self.ax1.xaxis.set_major_formatter(Params.FORMATTER)
+            # self.ax1.xaxis.set_major_formatter(Params.FORMATTER)
 
             Jpeak = self.data.Jpeak[:-2]
             Rpeak = self.data.Rpeak[:-2]
             self.ax0.set_title("JJIV")
             self.ax1.set_title("RRIV")
 
+            def on_xlim_changed(ax):
+                if ax is self.ax0:
+                    x0, x1 = ax.get_xlim()
+                    self.ax1.callbacks.disconnect('xlim_changed')
+                    self.ax1.set_xlim(x0, x1)
+                    self.ax1.callbacks.connect('xlim_changed', on_xlim_changed)
+                elif ax is self.ax1:
+                    x0, x1 = ax.get_xlim()
+                    self.ax0.callbacks.disconnect('xlim_changed')
+                    self.ax0.set_xlim(x0, x1)
+                    self.ax0.callbacks.connect('xlim_changed', on_xlim_changed)
+
 
             if self.data.BCG_early:
                 Jpeak = Jpeak - self.data.approximately_align_pos
@@ -540,6 +554,12 @@ class MainWindow_precisely_align(QMainWindow):
             self.ax1.stem(Rpeak, plot_element["RRIVs"],
                           markerfmt="C0.", linefmt=Constants.PLOT_COLOR_ORANGE,
                           label=Constants.PRECISELY_ALIGN_PLOT_LABEL_RRIV)
+            self.ax1.xaxis.set_major_formatter(Params.FORMATTER)
+
+            self.ax0.callbacks.connect('xlim_changed', on_xlim_changed)
+            self.ax1.callbacks.connect('xlim_changed', on_xlim_changed)
+
+
             self.ax0.legend(loc=Constants.PLOT_UPPER_RIGHT)
             self.ax1.legend(loc=Constants.PLOT_UPPER_RIGHT)
             self.canvas.draw()