Decoder jumpers ...?

[Luca_DC]

I run a Bachmann Spectrum Modern Baldwin HO 4-4-0, bought new. I run it using DC in the 0 to 12 volt range. The model seems to run just fine. Presumably, it would also run just fine, as is, on a properly operating DCC system. My questions are about the two (2) little DCC decoder electronics jumpers that are included with the model. On the parts sheet, I see the diagram that shows how to install the jumpers on the DCC decoder electronics unit.

1. Should the jumpers be installed if one operated the model on DC only?
2. If so, then what are the advantages, if any, of installing them?
3. If they should be installed for DC running, then what are the pitfalls that are avoided by having the jumpers in place?

[ACY]

The jumpers improve performance on analog DC and I would install them especially if you are using a controller with pulse.
The jumpers are intended for use if running solely on DC, the model will no longer operate on DC unless you take them out and put the decoder back in.