I have my old partitions moved over running System 6.0.4 and Finder 6.1.4(maybe 6.1.

I found some Mac software in .SIT format and wanted to try it out. I had StuffIt 1.0 and that didnt seem to work. I got ahold of StuffIt 3.6 Trial version and had no luck either.
I think I am having a problem with the Transverter program moving from ST->Mac.
I was able to move the StuffIt36.BIN file over and it ran just fine.
I have not been able to transfer any of the .SIT files successfully (atleast StuffIt claims they are corrupt and I get an unexpected EOF).
The options for the Transverter 4.6 program are as follows (Ive tried every combination with no luck):
MacBinary or Unary
Strip LF's or Leave LF's
Type: TEXT Creator:????
I have a feeling the LF and Creator may come into play here, however all my SIT files show up as corrupt.
I had someone test them on a real Mac and they worked fine so somewhere in the translation I am having a problem.
The Transverter program is a bit limited - I dont know if there is anything else that can do the move? It did work for the StuffIt36.BIN installer - just the .SIT files seem to not work?