I have a standard length build from the initial run Stan did. I use it about 6-8 times a year at a steel plate shoot. Runs great. No issues. I also have a shorty with 16 inch barrel. Same story. I have a kit in for the late Jan run to be built as a super shorty. Sorry to hear your experience wasn't palatable. Patience.
A bit of research on the web would have probably saved you a lot of headache. Everyone says his turnaround time is long. Mine was long as well, but I knew that going in.