Ok so I just today got my 4.5 super flex rubicon express short arm lift installed by 4 wheel parts. I use to have at 3.5 mystery lift ( I think it was a Rancho), but since I went up the drive shaft vibrates again. My old drive shaft was left unattended for so long because I had no idea what it was and broke in the middle of the road. Tomorrow I have plans to go and hit the trails should I hold off since the drive shaft is not in the proper position or will I be alright. Or just expect it to break? 4 wheel parts suggested getting it fixed but said it is fine to drive for now.