What happens if you turn off XON-XOFF in PuTTY ?
Do I need to solder a connection between pin 1 and pin 6 of the RS232 to TLL?
if you want an answer to that you need to post a link(s) to the datasheet(s) for the device(s) you re referring to.
It would also be a good idea to make a clear pencil drawing showing exactly how you have everything connected and post a photo of the drawing.
...R