No, not yet - but they are getting much worse. I had to move a tree stump yesterday, and as soon as I touched the brakes, they locked on tight. First low transfer required in order to proceed.
I've just bought a new mountain bike, and the resultant stacks are happening - bit like when I first took up trialling all those years ago. So fixing the Series is taking second priority, as I've entered an MTB endurance race in 5 weeks time (only tried an MTB for the first time 9 days ago)