SG 300-10's not performing as well as generic 10/100 switches over long cable run

Question

We have recently replaced three  - 10/100 Netgear or DLink switches at a customers site with three - SG 300-10 Gb switches. We are having a bandwidth problem with the connection between two of the switches. The customers says that the connection is slower than it was when we were using just the 10/100 switches. Here are the connection details -
The cat5 cable length is approx 374 feet (tested with cable tester and all wires are connected)
I have one end of network cable plugged in to port 10 on one SG300 and the other end plugged in to port 10 on another SG300. When I have the port settings set to "Automatic", I do not get any link light at all. When I set the one end to "100m Full Duplex", the switch at the other end shows that it sets itself to "100 Half Duplex", I get a link light and the switches pass network traffic between one another. Since 100 M seems to work, I tried to set both ends at 100 M full and 100 M half but have had no luck getting any better bandwidth than when one switch is set to 100M Full and the other is set to Auto.
The issue is that they were getting better bandwidth with the old switches.
Are there port settings that I can change so that these two switches will work better with one another at the 10/100 speed? I would think I could at least duplicate the speed they were getting with the cheaper switches.

Answer 1

                   Thanks Siva
My results are attached in 2 text files. The remote switch is the one at the far end of the long cable run. The Middle switch is in the "Middle" of the network and is connected to another SG300 switch in the server room.
In addition to the attached files. I received this message during my telnet session to both switches -
switcha5eedb#09-May-2013 09:05:49 %CDP-W-DUPLEX_MISMATCH: Duplex mismatch detected on interface gi10.
Message was edited by: Larry Broering
Message was edited by: Larry Broering