can anyone tell me how to reset this  2 function decoder to factory values with bachmann dynamis.thank's.volker

hallo,my name is volker and i am posting from calgary,alberta,canada.congrats to your excellent choice for pres.of the US of A.
  i have run my electro diesel lok scale TT (yes TT) with this  bachmann decoder for some time.i thought i was getting good at this so i tried to reprogram some cv values on the bachmann dynamis which operates my layout.bad move of course since now by lok  will slow  down intermittently .as i can not read back what values the various cv are now i seem to be stuck.can anyone tell me please how to reset the decoder to factory set values.the instruction sheet that came with it does not  so indicate???volker in canada(looks like we will need a new government soon also--sooner that you)

 hi to all,my name is volker and i am new to this forum.i live in calgary,alberta,canada.i started a tt gauge (between  "n" and "HO")recently.all my track ,turnouts  and rolling stock is older "EAST GERMAN" material.i purchased Bachmann Dynamis and  equipped 3 loks with decoders.everything thing runs great until i added two return loops to the layout.the 2 bachmann reversing units operate ok most of the time however every now and then the lok will stop as it enters or  exits  before or after the GAP.does anybody have any idea why this would be.i do not believe  it to be the  metal frogs(powered.)thank's volker
  "ENJOYING THE FORUM A LOT,BUT I AM NOT HO NOR N BUT "tt"