On the schematic, RP3 is listed as 4.7K, on the parts list include in the Jair Manual, rev-3 build instruction, its also a 4.7k, but in the
Build Notes and Bill-of-materials - REV 4
with photos of the parts, its listed as a 47K...
Looks to me like its not an issue, but you may want to clean this up...
also, a good replacement for the 7805 or 7805C, is the ST L4940-5, 1.5amp LDO regulator, its a newer part, regulator better with smaller caps.
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Tom Lafleur