I talked to Bob Hanlon at the London Cobra show last year or the year before. I was very impressed with him and the cutaway displays. He could explain everything and demonstrate it. If I get some time before I retire, I'll send it to him. If not, after I retire.
I have his card. 610 469 2695
The 5&6 Speed Specialist | Hanlon Motorsports
Brent does work on them and is a dealer, as well. I trust Brent, but Hanlon offered me a sweet deal to swap out my 5th gear ratio that I cannot pass up. I never heard of a complaint about either.
There are various things that can be done. Some are strongly discouraged for street use. They can make a TKO act like a rock crusher and nearly impossible to miss a shift, but it would be an annoying beast on the road.