3dsmax modeler question

So when you making model and animation in 3dsmax or wc3.
What type of controllers you use ?
What type of IK solvers you use ?
How you constrain bones ?

I bumped to an error and I dont know how to solve it... so I'm looking for an suggestions. I had to animate one same character for the 6th time with each failed another another coz wc3 doesnt support most of the things.

Wrong forum, bro.

Hm ? Where did I post it if not here ? xD
I thought I posted it here.

MDL editing is where you posted it.

Yes I see, one section under, Miss click, sry for that.

I HOPE SOMEONE CAN HELP ME.

my only suggestion

Ty for help, but its useless for me. I know all of that.

I attached picture of my rigg. Its very simple, coz of wc3 engine limitations.
I really dont know what I'm doing wrong or not doing. I removed all scale keys, but when I snap IK bones doesnt work fine...