after several years of use, my starex has this kalampag or vibrating sound emanating from the front brake system. pag sa magandang semented roads, wala ka mararamdaman but when you go through old na hindi pino na cemented road meron parang vibrating sound sa ilalim and pag inapakan mo konti brakes eh nawawala. upon checking the brake system, yung rubber around the pin sa may caliper ay manipis and maluwag na kaya nagvivibrate pag di maganda daan. we just applied teflon around it para sumikip. others use electrical tape daw or aplly thick grease para sumikip and mabawasan vibration. nawala naman yung sound on poorly paved roads. my question is may nabibili bang rubber nung pin? where can i get one? what else can we do instead of adding tape like a replacement rubber tube to be placed around the pin? need suggestions please.