i need a lil help my 89 bronco with a 302 and a aod transmission it revs up to 3grand and shifts kinda hard from i beleave 1st to 2nd and then it shifts fine into 3rd has anybody had this problem or knows how to fix it im hopeing its something easy and i dont have to rebuild my trans and i did change the filter i thought thats what it was but it wasnt please help