OK, Here is what I experienced. Label 76 as the Functioning Locomotive and Label 61 as the Problem child, I mean Locomotive. I placed the R2LC board from 61 in to Locomotive 76. I mated the Tender from 61 to 76 (which now has 61's R2LC Board).
I went to the layout and placed Locomotive 76 (Set up as 61) on the track and powered the Locomotive. Tried several function and they all worked as advertised. I increased the Throttle and it proceeded to move forward, hit the direction button, the Locomotive traveled in Reverse. I tried several functions which previously after moving the throttle did not work now worked. I did not perform the same tests on the other Locomotive as I believe this test proves that the R2LC board from 61 is not the issue. I am going out for a while. I hope by the time I return we can have some suggestions for the next Step. Since I feel that the R2LC board from 61 is functioning nomily, I will return it to the original Locomotive before the next step.
I edited this post please note the change in the first paragraph. I transposed the numbers in the unedited post. this is now correct.