Turbo bolts backing out how to fix?

[autobahNESSA]

Ok this is the third time i have had this happen to me in 2 yrs. I keep having the nuts back out that hold the turbo to the manifold, and the nuts/bolts that bolt the turbo extension elbow to the turbo. last nite i went out and drove a little bit. came home and had an exaust leak again. I havent looked to see which bolts are loose, or which ones fell off but I am 90% sure it is the manifold to turbo.

My question is, How do you guys make ur turbos stay on. I have tightend the bolts to 45ftlbs. hopeing that would cure but didnt seem to. I had to throw out the factory retaining clip deal that u bend to keep the nuts from turning, as it broke when i needed to take off the trubo. one side did at least. I placed the good one on the side where it is impossible to tightent the bolts when the turbo is installed on the manifold on the engine.

Is there any sort of high temperature locktite? I tried lock washers, they melt and become flat washers. Their is not enough stud length to place another nut to lock it in.

Please help as this is annoying.
Thanks,
Chris