I was playing Borderlands and managed to finish most of the game with one of my friends who hosted the game. The only things we didn't do were the DLC arenas and the Crawmerax quest. Our levels were 46 and it was still playthrough 1.
I then asked another one of my friends to join me (I hosted the game) with a high-level character, 69, to tank Crawmerax. That went quite well, I gained 2 levels and then we stopped the game.
Now my problem is, whenever I try to play solo continuing my playthrough 1, all the enemies are scaled to this 2nd friend's level I think; basically, any enemy I see is at level 62.
Is there any way I could revert this back to what it should be? I tried inviting a friend with a lower level to see if it helps but it didn't :(
Edit: playthrough 2 seems to be fine but there's still some stuff I wanted to do in playthrough 1 - like farming MINAC for the silly achievement items.