I bought a Heng Long KV-1 and Jagdpanther with full IR option, metal gears, tracks…etc.
I realized that the standard suspension can’t support the weight of the model. I was working on the KV-1 rear suspension and got a better tension but still is very soft.
The Jagd is worst, the front doesn’t support the weight.

Somebody have had this problem and which was the way fixed it.
Thanks in advance.