hello all.... i have a 95 z28 auto with a 165,000 miles on it. i just recently noticed something weird when shifting from 1st to 2nd. whenever i get on the gas hard from a dead stop and the tranny goes to shift from 1st to 2nd i get a really hard shift, it makes like a popping sound which is making me a little nervous. this tranny was already replaced by the previous owner with a tranny with 55,000 on it. please let me know if you have any ideas what this could be!