I use the same software as bluethought (Mirc 6.14) and have attempted using sock4&5 set to localhost (my SOCKS proxy) to DCC get.

My DCCs always time-out due to the fact that they are not being directed to my proxy but instead they are attempting to make a direct connection through a port that has been disabled.

For example:
While running a netstat directly after initializing DCC it shows a TCP Syn_Sent at IP 38.115.XXX.XXX:4019 while it should be sending the TCP connection to SOCKS proxy.

Let me know if there's anything I can do for you to help you resolve this issue.

Valkyr