Got audi a3 sline 2.0 tdi 2013.first started .trouble going in first and reverse and not to smooth in the other gears ,first changed master cylinder.made no difference . next complete clutch .which did make some difference,it will go in first and reverse, but still does not feel smooth .in all gears ( abit crunchy ) any idears.beginning to do my head in.and think wounld cheeper to get rid,