Your rifle was not overhauled by Remington. The most logical explanation for your rifle in its present configuration is that someone replaced the original Remington M1903 barreled receiver with the 1927 barreled receiver currently residing in it. One can only speculate who, why, and when the replacement was made, but obviously it was sometime after 1942. Under those circumstances, the rifle in its present configuration likely didn't seen much, if any action during WWII.
J.B.