I HAVE A AZTEK AND IT HAS A SHIFTING PROBLEM

What is your question?

THE GAS GAGE DONT WORK SOON AFTER THE TEMP GAGE WENT OUT I FIXED THAT IT WAS THE THERMAS. THEN SOON AFTER THAT THE SHIFTING STARTED TO BUCK AND IT WOULD SAY I WAS GOING 25 MPH WHEN I WAS REALLY GOING 50 AND FROM THERE ON IT JUST KEEPS GETTING WORSE I HAD A FRIEND TAKE IT APART AND HE SAID A NEEDLE WAS SHAVED DOWN TO NOTHING AND THAT MIGHT BE THE PROBLEM BUT THAT WAS IN THE TRANNY DOES THAT MAKE SINCE HAS ANYONE EVER HAD THIS PROBLEM PLEASE HELP I NEED MY CAR BACK ON THE ROAD I WILL TAKE ANY THOUGHTS