combine ball dispenser problem fixed!!!

Has anyone created or has come across a Combine Ball dispenser like Valve made for the single player version? If not, does anyone have the blueprints for it or know of a site that has a prefab of it? My map is 80% complete and that's the last major item that I would like to have to help complete it. I found a few posts on the subject but nothing as far as a definite how-to. I can't seem to get it to work. Thanks in advance.

I thought the Combine Ball dispenser already were in the prefab pack you got with Hammer 4.0 ?

<DIV class=quote>
<DIV class=quotetitle>? quoting NewBlood</DIV>
<DIV class=quotetext>I thought the Combine Ball dispenser already were in the prefab pack you got with Hammer 4.0 ?</DIV></DIV>
I tried using Valve's prefab but it only let me take one Combine ball out then shut down unless I placed the ball back into it in which case it would spawn another one. Repeating this process resulted in tons of Combine balls that would just float around my level. I have since fixed this multiplier problem by modifying the prefab to spawn one ball after the previous one had blown up. I also was able to prevent the balls from being placed back into the dispenser once it was taken out. When fired back at the dispenser they now just deflect off of it and continue to ricochet off the walls until they detonate, thus respawning another one. I couldn't ask for a better result. If anyone wants this modified prefab, you cand find it later tonight in the prefab section.