Hmmm
Reading the RFC
reserved = gen-delims / sub-delims
gen-delims = ":" / "/" / "?" / "#" / "[" / "]" / "@"
sub-delims = "!" / "$" / "&" / "'" / "(" / ")"
/ "*" / "+" / "," / ";" / "="
It looks like all those are reserved.
Do you have a reference to what reserved characters you are referring to?
Thanks
Dave