Wow...this guy is kind of a dick....but very informative!
He said that cutting every other dog off the gear, and every other groove out of the slider may help, but just doing the gear wouldn't do anything, and doing the brass was total non-sense. He said if you only did the slider, it would be more benefit than doing anything else. Hmmm.....
After explaining as much as I could over the phone with him, he suggested that it is a pressure plate issue that was causing my missed 2nd shift and that caused my dogs on 2nd gear to round off. Asked me if I had centrifugal rollers on my pressure plate. Then said I need them?
He gave me some other people to call and talk to.
Hmmm......this is getting deep.