I honestly don't know what the bumper situation is.   I don't deal with anything but engineering.  As stated on the JJP forums that the delays have been different things at different times.   There are no current delays.   We are just about ramped up to 40 games a week.  At one point we were waiting on production light and I/O boards for a LONG time.   After we put some proto's out on the street we were able to stress test some components and realized a few things needed tweaking or a minor redesign so we sent those out to be fixed and produced.  

Everything in this game is new.  Every part, every process, every line of code.    Video game companies take 2-3 years between game releases and that's using an existing engine and its just software development.    We built a brand new high definition platform including all physical components, new cabinet printing methods, new os, new game platform, built a factory, and trained a workforce in 30 months from idea to delivery.   Anyone familiar with any of this individual tasks will know what a Herculean task this was.    Games are shipping. We are shipping in batches.  

I don't know what the "bumper" situation is but the warranty on games regardless of distrib will be handled by JJP so no worries there as I saw someone was concerned about that?