so rc truck #2's rear suspension broke only after 3 days.
hahaha. withstood probably about 300+ cycles of low jumps at about 45-50cm off the ground. the thing is, the same part broke 30yrs ago on a similar chassis my buddy had.
anyway, replacing the part will only last me 3days, so decided to mod it using much more robust bits + new damper locations for improved damping.
thing flies now through jumps and lands basically flat with controlled rebound.