Using Obi's tutorial using lego levers to make ball jointed hands and the suggestion another tanker had using those same lever's, I fixed my Roadblock.
Cut the lever to the length you need & clip the peg off the hands your gonna use(Im using MU Commander Rogers)and drill a hole into the hand.
Becasue Roadblocks wrist hole is large, you put the ball end into the wrist hole and the stick end, glue into the hand.
Paint to match skin tone if you want and your all done.
Works for any other gloved hands with small wrist pegs and if you use gloves with long wrist cuffs, you can get extra wrist articultion by keeping one end of the lever a little extra longer, the cuff should hide that extended peg.
Lever's are from here,
http://www.bricklink.com/browseList.asp ... tString=24
Different sizes & colors available, I used the small ones for the hands. Super cheap, I got 200 levers for $3 and shipping was like $2.