Fail to discard the character T from my transmitter Arduino

I wrote code for my transmitter Arduino. I want to send the data to the receiver Arduino through Tx and Rx serial.

The issue is that I could not discard the char "T" and it appears as output value on pin 9 or 10 or 3.

This is the transmitter and receiver code. I only need my receiver code to be modified.

Transmitter code :

char HEADER_BYTE = 'T';  // Character header

#define potPin1 A1  // Potentiometer 1 pin
#define potPin2 A2  // Potentiometer 2 pin
#define potPin3 A4  // Potentiometer 3 pin

void setup() {
  Serial.begin(9600); // Set baud rate for serial communication
  Serial1.begin(9600);
}

void loop() {
  int servo1Angle = map(analogRead(potPin1), 0, 1023, 0, 180); // Map potentiometer reading to servo angle range
  int servo2Angle = map(analogRead(potPin2), 0, 1023, 0, 180); // Map potentiometer reading to servo angle range
  int motorSpeed = map(analogRead(potPin3), 0, 1023, 0, 250); // Map potentiometer reading to motor speed range (adjust based on driver)

  // delay(1);
  Serial1.write(HEADER_BYTE);  // Send header character
  Serial.println(HEADER_BYTE);
  Serial1.write(servo1Angle); // Send servo 1 angle
  Serial.println(servo1Angle);
  Serial1.write(servo2Angle); // Send servo 2 angle
  Serial.println(servo2Angle);
  Serial1.write(motorSpeed);  // Send motor speed
  Serial.println(motorSpeed);

  delay(10);
}

Receiver code:

#include <Servo.h>

Servo myservo1;
Servo myservo2;
int pot_pin = 3;

void setup() {
  Serial.begin(9600);  // Start serial communication
  Serial1.begin(9600);

  pinMode(pot_pin,OUTPUT);
  myservo1.attach(9);
  myservo2.attach(10);
  // myservo.write(90);  // set servo to mid-point
}

void loop() {
  if (Serial1.available() >= 4) {
    if (Serial1.peek() == 'T') {
      Serial1.read();  // Discard the 'T' character
    }
    int incomingByte = Serial1.read();

    // switch (incomingByte) {
    //  case 84:
    int pot1 = Serial1.read();
    int pot2 = Serial1.read();
    int pot3 = Serial1.read();

    myservo1.write(pot1);
    Serial.print(pot1);
    Serial.print("   ");
    myservo2.write(pot2);
    Serial.print(pot2);
    Serial.print("   ");
    analogWrite(pot3,3);
    Serial.print(pot3);
    Serial.println("  ");
    //  break;
    //}
  }
}