Few very important fixes

Hello.
I have request to fix 2 very important things.

Wheels:
If you put something hevy (few PHX plates) on wheels they collapse. Its really annoying maybe make option to disable shocks or something.

Slider/hydraulics:
It is very annoying… i remember this from times when i was starting with gmod (early Gmod10)… Sliders sometimes or very often freaking out… I dont know why…
Just check out my vid:

Up the planks are sliders and winches