Does anyone else have a problem with the drains in the liftgate getting blocked? Mine have both been blocked several times now, you can tell when you get a nice pond forming under the rear spoiler (mine does not have a active spoiler). I’ve tried using a air compressor (from both directions) but this hasn’t worked, I’ve only managed to get them to work by getting a small piece of wire threaded through the grommet - is there a better method?