Hi to all expert,i had converted my wira 1.5 sedan rear brake drum to wira 1.6 ori rear disc brake,all the PROBLEM is handbrake totally NO FUNCTION!!i already replace the new handbrake cable left & right,n done the disc rubber repair kit.At 1st become fine,but after 1 month become no function again.i have to gear in to park my car even in house parking.can anyone tell me the pro or intro any workshop know to repair it?i had tried many workshop near my place but NO ONE can fix it n give many excuses, tq very much.