Is there some trick to removing the oil lines from the turbos? I have removed the nuts off each flange on the turbo side (underneath), as well as both banjo bolts for the feeds to each turbo... and the oil return line(s) just won't budge at all! Is it because the rubber portion is so old it won't flex? I even removed the 2 nuts holding oil return "Y" adaptor into the block. Still no dice. Is the oil return line held onto the block by some bracket I'm not seeing?