So currently pulling together my new build using EK 12/16mm PETG and as the title suggests the 12mm EK Silicon Insert (11mm when I measured it) just slides straight into the tube with no resistance at all. When bending this is causing flat spots in the tube which frankly look terrible and tend to make the bends larger than they should be. Never had this issue with 10/12mm tubing and related inserts so wondering if anyone has encountered this issue before with 12/16mm EK products and can suggest somewhere to get a snug insert for this size. So far my google efforts have proved unsuccessful for anywhere onshore so hoping someone can point me in the right direction, even if it's from somewhere like bunnings.... Cheers!