As I rolled to a stop light I noticed my rear brake is not as effective as it should be. So as I was going I hit the rear brake and I can feel it engage but I think it could and should be a lot more useful. Any initial ideas what to check out? Bleed lines-have read horror stories here, pads, do they adjust...???

Blue/White, Battery Relocated, 155/45's, AI removed, Cocktail shakers