RT valve milling

[xero28]

I'm looking at picking up an RT valve for my micro, but I wanted to drop in a ULT. I know that it would have to be milled to accept the ULT. Does any one know where I'd be able to have this done and how much it would cost. If it's something like 15 or 20 bucks, than I think it'd be worth it, otherwise I think I'd just go with an X.

I tried calling Brad at Paintball Maxx that AGD had on their website, but the number was no longer in service.

Thanks.

[rifleman wi]

tuna man does it for $35 + shipping.