Cayenne 958 - Blocked rear washer nozzle

[nomank]

This must have happened every couple of weeks for me in the past few months. They've (OPC) have unblocked it each time and changed the nozzle 3 times and have checked for crap in the tank/lines. Yet they always blame the weather (salt on the road) for the blockage. It wasn't an issue the previous year so can't figure out what could be happening differently this year

Anyone else experience this issue??