Problem toggling TPC from Command to Conventional

I use the same arrangement with perfect results.

I hit the TR button, then the track number, then M for conventional and SET.

Mike Regan did a vid on this set up.  It's available on Youtube.

Dave

I use the tr button and then either the L or M button have never used set button. 

so can you explain to me why to use the set button?

I just leave it in the conventional, or  "M" mode. When I want full track voltage, just hit AUX1-9 and get full track voltage. Never understood what the supposed command mode was for anyway.

I went with a up grade and installed the legacy  power masters. A very big improvement I think.

just guessing, is your tpc addressed with a track or engine id number? Could  it be you forgot?  Good luck.

Larry

Thanks much guys.  I re-programmed it to track 2 instead of 3.  It defaulted to "M" mode so I can run conventional again now.  I used the set button because the TPC manual indicated that I should.  I haven't tried the AUX1-9 but will try that first and then if that fails I will try toggling "M"/"L" without the SET button.  I also went ahead and order the Legacy Master.  It sounds like I should have fewer problems with it.  Thanks again to all of you.