My purpose was to weld a larger pipe that would go over the NRS tube in order to create a jig for drilling holes. but I just found out today that the existing lopros are not drilled the same so there is no such thing as a consistent pattern to create a jig pattern. The details are in my other post about lopro offsets. Thanks for all of your help though.The new LowPro fitting are forged. That should make a better weld, but why is it an issue. The stainless steel through bolt is a good repairable connection.