Steering not self centering

[Lotustom]

Booked in on Thursday with a rack reconditioner for them to take a look. He has heard of the problem and has a

I'd also like to hear what he says about it. The worm gear design is not ideal in my opinion. But maybe there could be other problems that make it worse. I am thinking of disassembling the electric motor to determine the stiffness of the steering rack itself. And then drive to see if it centers. I had adjusted the wheel alignment for more toe in but that did not solve the problem.