Well.. tons of progress.  Not as many photos of the final stuff yet but some of what I went through.  Few questions at the end.. Thanks for coming along with the ride. Internal baffle for the plenum.. This is before modification which is the burn pictured above in previous post (too much velocity at the end nozzles).  Modified it with more holes, some larger that what is seen here.  The holes are where it extends inside the plenum over the burner block.  There is currently an upper shield w