Just wondering if anyone has had a problem with the boom arm, in particular the nylon swivel that attaches the swivel arm to the lower tube. This piece fits into both tubes with the bolt passing through the boreholes. I noticed the nylon piece has cracked and the boom arm is tilting more than usual. I called Festool and of course they are shipping a replacement part, no charge. I was curious, because I have the D36 hose hooked up to the arm, not the D27 hose. The boom is less than 6 months old and the Festool rep suggested I go back to the smaller hose. Anyone have any similar issues with this?