Having received the wide-track conversion kit from Caterham, with the standard instructions (namely none), one side has gone together quite smoothly. However I have a quandary my kit contains two of these tophat spacers https://caterhamparts.co.uk/fixings/7164-tophat-wishbone.html but they don't seem to be mentioned in any of the assembly guides I can find. Conversely the assembly guide mentions a "special turned down nyloc nut", for holding the bottom of the front upright, which I don't seem to have in my kit, and can't find on the Caterham parts site. I feel the two things might be related but does anyone have any insight? Thanks in advance. Alec