Problems implenting code on 20x4 LCD but code works on 16x2

Other Hardware Displays
6

Good day,

now my code goes to the Making HTTP connection state then it shows gibberish that fills the whole screen..

void loop()
{
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.write("Attempting to");
    lcd.setCursor(0,1);
    lcd.write("connect...");
    delay(2000);
{
  if (client.connect(serverName, 80)) {
    TextFinder  finder( client,2 );
    client.println("GET http://api.twitter.com/1/statuses/user_timeline.rss?screen_name=kennethbeatle HTTP/1.0");  // twitter rss for 
    client.println();
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.write("Connected");
    lcd.setCursor(0,1);
    lcd.write("to server!");
    delay(2000);
  } 
  else {
    lcd.clear();
    lcd.setCursor(0,0);
    lcd.write("Could not");
    lcd.setCursor(0,1);
    lcd.write("find server...");
    delay(2000);

I used LiquidCrystal lcd(9,8,7,6,5,4); //pin 4(RS on LCD) to pin 9 on arduino and pin 6(enable) to pin 8 on arduino.

appreciate your help!