Here is my feelings on this. I have never fabricated anything of major detail. I do things around the house and in the garage. I have often had a thought about doing something and can envision it, however I have never actually done it. Someday I would like to try to be at that place and ability.
That being said, I have no idea how something like this would turn out if I were to try it myself. It could be worse, similar, or better. I would, however, not be content to call it "good" if it wasn't what I had envisioned. I would like to make it perfect.
As I said at first, I have never done anything like this and what this "shop" is putting out as a "professional" kit seems like something a novice did and was just slapping something together to say they had. It really is a shame that they are offering such a poor kit and on top of that carelessly forging forward. I feel for those that have been burned and fear for those that still will be.
Chris