I am having trouble recording a VHS tape through another VHS tape. I have two VCRs hooked up to the television. I have the antenna from the house coming ito VCR1s input and VCR1s output going into VCR2s input and then VCR2s output going into the television. Everything plays fine. For some reason whenever I record it is recording what is on the television rather than what VCR1 is playing. Could someone please offer me some assistane.