Triumph Repair: triumph gt6 mk3 1973 suspention, leaning, rotoflex

Question
My gt6 leans to the left rear corner. I have redone the whole front suspension. I have replaced the rear spring, the bushings for the differential, shocks are new. I had the frame checked by two different shops. The camber of the rear wheels is as follows left side leans in at the top of the wheel and the right side stands straight up. Yes I followed the manual and tightened the vertical link with load on the vertical links when I replaced the spring. When I jack the car up by the diff the rear frame is off by about one inch, left side being lower. I Can't see any noticeable bends in the frame.
 Ant help will be greatly appreciated

Answer
It sounds like you have checked all the typical items and problems. I honestly can't think of anything you haven't covered.  The frame shops probably did this, but verify the "left side lower" by putting the frame on jack stands, establish the same height at the jacking points, and then measure the gap between the level floor and the frame "dip" you see, and the same point on the other frame.

Swing arm or rotoflex?  If rotoflex, it is possible to adjust camber (I think) by drawing in the bottom of the vertical link; some drivers have replaced the solid lower wishbone with torsion bars with adjustable rods.  Replacement of the donut with a CV joint is also an option, as the donuts do go bad and cause alignment problems, I've heard.

Check the rear track, it may be correct and you may be able to adjust out the camber problem.  Take a look at the below link to a GT6 racer I know.  This is a picture of the adjustable setup for a rotoflex GT6.

http://i206.photobucket.com/albums/bb46/GT6Steve/Rearrods002.jpg

If you are a swingarm setup, all the camber adjustments are "fixed" and your only options are raising the spring with a space, modifying the diff mounts to raise/lower the diff, and the length of the axle.  The dip in the frame you see shouldn't cause an alignment issue on a swing arm, as there is no attachment to the lower section of the frame; it is defined by the spring/diff/axle relationship.

Let me know if there is something I can do to help.