,What is your opinion on handlebar shims? Are they safe? Do they work? I've heard mixed opinions. 31.8 stem and 26 mm bars. Does this look sketchy? : r/bikewrench,Ergotec Quill Fork Shim - 1 Inch 22.2 mm ID - 1 1/8 Inch 25.4 mm OD,ZENITH A-Head Stem Shim 28.6-25.4mm | £3.50 | Handle Bars | Stems | Seat posts | Stems - Road | Spa Cycles,Shim Craft|Shim.Handle/ SC25-SP鋁箱改裝提把\適用UG-025