Ha! You know in all this time, I never looked at the TM boost difference between Arb and Apo.
This is precisely why discussions like this are so valuable. After 11 pages, you have randomly pointed out a small detail that was missing in the structure of my team.
It might not help much, and I'll probably still struggle with the new speed requirements anyway, but it's a legit mistake that I can easily correct.
And yes, my gear is glyphed, I just don't grind for enough gear.
*Update*
Checked the Jedi speed calculator and it's actually better to have Arb go 2nd. Decreases the speed I need for Trunda by 10. Apo's speed increase is providing a larger amount of turn meter that way and Arb's TM boost is the same.
So if I could make Trunda around 205 speed, I could put Arb first and up her speed. The problem is Trunda won't go from 187 to 205 without a serious drop in dmg. I'm better off increasing Apo's speed in my current set-up and keeping Trunda hitting really hard.
A billion dragon runs would solve all of these problems and build a fast Arbiter with a 205 Trunda...but we already know that.
Looks like a speed team of Arb/Umbrall/Serris/Trunda is my easiest way to speed requirements. I can get my Arb to 308, and would need Umb to be 260, Serris and Trunda wouldn't matter. I probably need a billion dragon runs anyway to get Umb to that speed 😭
Cheers.