So Patrick used to make custom TH8A and TH8RS shifter gates under the name Right On Gates. He stopped, and I was disappointed because I REALLY wanted his sequential plate, BUT they're not cheap, and I didn't have an OG plastic gate to be a spring donor. When I was moving and while I wasn't on the boards often he offered me a spring, but I missed it... and by the time I was back he was done making gates! Eventually I got a replacement TM gate and started using it, and out of nowhere he reached out to me and asked if I still wanted a sequential gate, as he was doing a small custom order and would work one in for me. I of course, couldn't say no!
So to make Patrick's gate work, you need to steal the spring from the stock plastic gate and install it on the "Right On Gates" (henceforth ROG) gate. Since Patrick includes the allen wrenches you need that was very easy. Then there are 2 screws on the up and down shift sides of the spring housing of the ROG gate you can use to adjust travel somewhat. Once you fiddle those to where you want them you just reassemble the shifter as you normally would and take it for a spin.
I had noticed that when I would use the stock sequential gate, it had a little squeaking sound. With the ROG sequential gate in place, no such issue. While the overall feel isn't much different, the ROG gate makes it feel sharper, more concise, and it even gives you a small kind of "click" sound when you hit the stops rather than the dull thump of the plastic gate. It really does makes shifting much more satisfying. About the only thing I dislike is that the screw that is used to push down the "Sequential Mode Button" on the shifter sticks up a little more on the top side than I'd prefer, but I suppose I could just file it down if I ever feel the need.
Ultimately, the Right On Gates Sequential Shifter Gate doesn't make the TH8A/TH8RS gods gift to sequential shifting... but it does make a solid "jack of all trades" better at that specific trade for sure! And there is no doubt it sure looks cool!
You just need to separate that big metal bottom part from the top. Then you'll see the insides. From there, move the shifter into some gears so you can see the little ball detent piece. It's hard for me to describe and I don't have time to take a pic for you. You'll see it. Move the shifter so you can see it, then put some lube on there. You'll see where they had lubed it already, likely with some white grease. Put yours on there, move it around a bit, put some more on, then reassemble. It'll be excellent afterwards. I've been meaning to do a video on this but just haven't had the time. 
