Yes and yes - after bending some links for high clearance on my first scx24, I didn't like how much shorter they got. This made me start with longer links all the way around on the Taco. I just kinda played around with different lengths and bend amount until I liked it.
Having put together treals, rc4wd, injoras, and some early printed shakas, I'd say the treals are the easiest. They let my slingers slip, but they've held the rock locks just fine. The rc4wd steel wagons are a pain to assemble, but bombproof after. I haven't put enough time on the injoras to...
Shhh, don't tell anyone I'm slumming a 2s lizard, and my 3s tegu is still in the unopened package. This thing folded a set of gspeed chassis rails in half on 2s (that's how it got its name, btw).
It would be utterly reeediculous on 3s!
So, yeah, gspeed warrantied the rails. I ❤ them. I...
A few things that make a difference...
https://www.amazon.com/Brass-Extended-Wheel-Upgrades-Crawler/dp/B08PSVP38R
https://store.rc4wd.com/10-Tires_c_599.html
^^Their steel wheels are spendy and somewhat tedious to assemble, but game changers...