727 no reverse

that i personaly dont know..i have only built 1 727 and it has worked flawlessly for about 2 years the only problem i ever had was cable adjusment when i installed my shifter... that beiing said if your shifter is fine and you have checked and rechecked your band adjustments then unfortuantly it sounds like an internal issue i know when i built my trans i tested all the clutch packs with shop air at the valve body to make sure they where engageing