Alright Eddie, best place to do this? Send the risers back to SM?

Anyone that is competent with a Tig can weld them in for you.No reason to send them to SM. I'm sure you should be able to find a local welder to do it. I would be glad to tell you how to do it. If you search my posts in the Tech section, you should be able to find where I explained it to someone else. I have done it a few times so it shouldn't be hard to find. If not, I would be glad to run it down again for you.
Eddie

I'll take a look, thanks for steering me down the path, I knew that was the answer :)

My pleasure. Let me know if I can help in any way.
Eddie