is this normal????????rear seal on tranny

i replaced the rear seal on the transmission because it leaked, 250 miles later im having to replace it again?????? WHY,its on my bagged isuzu if that helps, i need help, later

what rear suspension do you have?

4 LINK,BAGGED OVER AXLE

forward link, half n half reverse does the rear end move forward alot when its layd out or lifted?

yep thats what I want to know. If your 4 link is a 50/50 or reverse it could be cramming the driveshaft into the tranny because the axle doesnt follw the arc of the driveshaft any longer.

all four are forward, i doesnt move that much, i bought it somewhat like it is and it used to bash the sh*t out of the tranny but i moved the axle back about 1 1/2 or 2 inches
its not leaking now but i dunno how long that will last.