Need some help with my layout...

Are the loops electrically connected so that voltage and the Legacy/DCS signals are present on both loops ?

Maxrailroad posted:

 There are a few feeder wires running to those lockons throughout the layout. How frequently in feet between each feeder?

Whenever I run Legacy or DCS engines on my outer loop, signal instantly drops and the engines reduce speed and to a point where they stop moving. Is it at the same point on the layout or in different location on the outer loop?

FWIW, those TMCC direct lockons have been known to degrade DCS signal, but if you haven't had any problems with DCS signal, then good for you!

Richie, yes, both loops are connected and receive signal for Legacy and DCS. 

SF 3751, there is a good amount of space in between each feeder. I did not run enough when building my layout, but signal worked fine until about two weeks ago. The signal cuts out noticeably in the same spots. DCS signal on my layout has always been problematic, so the TMCC lockons must be the culprit. 

Thanks for all the ideas.