Last night I started to replaced the rubber brake hoses on my car with stainless steel braided brake hoses. To my dismay, I discovered that the flare plug bolt on the hard brake line behind the rear driver side brake hose is completely rounded off so I cannot remove it.
I also replaced all the pads and rotors, plus the rear calipers, and I will be doing a full brake fluid refill and bleed before driving... but I don't have time to wait for a replacement flare plug.
Is it a bad idea to run with three braided brake hoses and one rubber brake hose for a little while? Will the difference in hydraulic pressure be significant enough to cause uneven braking or wear in the short term?