1970 beetle brake problem

Im working on a 70 bugs brakes and I just replaced master cylinder and bled the system.now when i apply the brakes they work but the peddle slowly creeps toward floor. so I bled it again .same problem,then i noticed there is a leak at the seal where the resevoir lines go in. bad seals i think,but I didnt think that it would affect the cylinder as long as it has fluid supplied to it. I may be wrong though,any help or input would be awesome..thanks

ok,well im goin to start over and bench bleed the master cylinder ,and then the system again .I guess.....