getting Retro valve drilled for ULT

[Ryknow]

Does anyone know where to get this done or who does this? Im looking into getting it done for my current project. Thanks,
Tyler

[questionful]

I'm pretty sure anyone can do it.

[custar]

You may want to sell the RT valve and use that money toward an Xvalve or an Emag valve that will accept a ULT without modification. If the drilling isn't done precisely, your Retro valve may be FUBAR'd. It's your valve, of course, but you should understand the risk of doing this.

custar

[Ryknow]

I know if it is mis-drilled the valve is spent, which is why I was looking at someone reputable to drill it. I had heard destructive customs was doing the work, but their website is down.