I had an experience with their J Henry New English parts set that was, at best, only fair. Barrel inlet was not good at all, & given the wait for the set, I decided to forge ahead with it. Turned out just restocking the parts. That was my mistake as I could have made them give me a new stock. All of the furniture was great. I used Chamber's late Ketland lock which looked much like the original, but smaller. I did not use the TRS lock because the TRS finished ones that I have seen have been.....rough. I think that if I were going to build their 1803, I would forego their wood and use a Davis lock, unless you can assemble their parts (I cant). Their furniture will likely be fine. Just my experience and partially my fault.
Roger B.