Syncronize unquantized patterns

Hello everyone,
i’m a new SC user and I am excited about the possibilities of the pattern system. I made a Pdef with different Pbinds whose duration is synched and derived from the first Pbind \dur pattern. This pattern has got variable durations, that cannot be expressed as a main clock divisions. I see there’s a method to quantize Pdef changes to a main clock, but i can’t find a way to quantize Pdef changes to the end of a pattern. What i would like to do is to hear Pdef changes once the main \dur Pbind has reached the end and starts all over.
Any suggestion can be helpful, thaaaaaaanks.