4200XL gearbox failure out of the box?

[Lil Giants]

This china hoe DOES now come with spring loaded idlers?

Tracks too tight would only matter if there were alignment issues with driven gear/rollers/idler wheel... could cause some unnecessary load on the motors, but not enough to destroy the gearheads.

Can't see your pics... some members use attachment photos & the pics will show up, sorta. I'm not sure how it works; I've always used an external photo host site to photo link pics to forums...