You haven't done the holes in the airbox and it makes a big difference of course most folk recoil in horror at doing such, drill e'm as per the book and you can buy/fit rubber grommets that pit perfect if you decide to sell.

And when you can afford it chuck the front master cylinder in the bin and try something like this.

http://www.venhill.co.uk/Controls_an...ER_(19mm).html