Mine worked out of the box too. I just changed the frequency and baddabing. Even chatted with Marco on it tonight. Range is not super impressive, but it works.
I can also confirm that the Plus is pretty different than the base 3R now that I compared the two side by side.
1978 13BT-40, 70 series mechanicals
1966 FJ45 lwb stock
2003 100 OME lift
1974V8J40, 1992FJ80, 1985FJ60, 1971FJ55, 1978FJ40, 1974FJ40, 1997 LX450 all long gone.