In the current draft I found the following spelling errors:

issueing

iving

miminum

neccessarily

negotated

recevied

wherin

withdrawl

And, a couple of usage issues:

synchronization
synchronisation

Both are correct but the first one is U.S. English and the second one is U.K. English. Pick one and be consistent.

buses
busses

Both are correct but the first is far more common. The draft has "busses."