The main problem was the straps. The entire rack will flex down a bit as you tighten the mounting bolts, so you dont have to be exact, but mine were set too narrow by maybe a centimeter. In a race, where you need to shift quickly, and constantly find yourself going into 3rd from 4th gear, while actually moving the shifter into 5th-gear positioning, it absolutely destroys your racing. Runs little large. I loved the first set I purchased over a year ago (black and brown), they still look like new. ????Update: Apparently, (because there was not explanation in the shipping material) the company that sells this charger saw my review and sent me a replacement charging cord. In addition, the author teaches the sounds of caught and cot as the same sound, which, for the majority of Americans, are distinct. Had to return & order a half size bigger for my wife who normally wears a 7 1/2 & get a size 8. Hope this last for years. One of the hooks on the back wasn?t fully screwed in because the wood was cracked.