Broken rig in Source

Greetings. I’ve made smooth rig for a playermodel and it looks fine in Max, but Source seems to ignore the weighting applied to Spine, so this is overly confusing. Just compare these:

http://i.imgur.com/B26cNfu.jpg[/t]
[t]http://i.imgur.com/qjCbuxz.png[/t]
Last time I had the same problem with Spine1 when Spine2 ignored weighting applied to the former bone.
[t]http://i.imgur.com/B7pXkfu.png[/t]
[t]http://i.imgur.com/dXrLNGa.png[/t]
[t]http://i.imgur.com/1K9Za4S.png

Is there any way to get this solved apart from re-rigging it (I wouldn’t even know to which bone now)? Thanks in advance.

StudioMDL culls any vertex weights that are less than 0.05.

That might be the cause of your problem.

Oh, what a bummer. Thank you for letting me know, I’ll do some adjustments then.