More coming to mind....Bath City 5-0, Cheltenham ( then ) 4-0 and the 1933 Cup run, when we forgot to apply for exemption and had to beat 4 or 5 non-league sides just to get into the 1st round.
I don't think we replayed v Leatherhead. I thought there was just one third round game at the Goldstone, in front of about 20,000. We also lost to Bedford 2-1 in the mid 60's.
Wisbech 10-1....Northwich Vic 8-0....Hillingdon 7-1.....Crawley ( then ) 5-0.... and many, many more. Its the defeats that people remember most, not the comfortable wins.