With my IVA looming in just over 2 weeks, I've discovered my rear wheels lock-up before the fronts 😕
I have Sierra uprights with HiSpec Ultralite 4 callipers. I'm assuming 50/50 braking between the front and back - backs locking first because of the weight at the front . . .
I need a valve that is non-adjustable for IVA. I've read a few of the kit-car forums and the Fiesta one looks like it will do the job. Ebay has a few:-
https://www.ebay.co.uk/itm/Genuine-Ford-Focus-C-Max-Fiesta-MK5-Front-Brake-Pressure-Reducing-Valve-1469610/272376228296?epid=1509753686&has