So just to clarify the day to day implementation of these rules:-
61.58 doesn't apply to Fractional Operators, Airline, Ad-Hoc 135 Operators or the others mentioned but does apply to standard private Part 91 pilots
A PIC check must be done each 12 calendar months HOWEVER
You may go over into the 13th month before check provided you back date the date of the checkride one month AND
You are legal to fly PIC in the 13th month even if there is no intention by the aircraft operator to carry out the recurrent training or checkride
Correct???