Forum:Is there way to get to playthrough 2.5 without completing all story missions in playthrough 2

Hi everyone, DNYI here

I was wondering if there is a way to bypass the story missions in playthough 2 so you can get to playthrough 2.5 without having to complete them. I am asking this because I want the game to readjust to level 50/51 before I complete certain story quests so that the rewards from the quests are at level 50/51. In particular, I want to get the Rider http://borderlands.wikia.com/wiki/Rider at lvl 50, but acess to it gets cut off after completing the Another piece of the Puzzle when the hidden basement closes http://borderlands.wikia.com/wiki/Hidden_Basement. I would like to bypass this quest and come back to it in playthrough 2.5. Please note I'm using a PS3 and I do not want to use any editting software to do this. Any advice on this would be appreciated