Hi, looking for some help please? I have just got a trek rail 9.8XT and find my current Thule bike rack doesn't really grip the bike as I would like. Currently I use the Thule arms to lightly grip the top tube, but I'm nervous with this method. The Thule grips are more suited to round top tubes. Anyone any suggestions on an alternative bike rack, preferably one that holds the wheels only, and suited for carbon frame. UK/Ireland based.