I've found the last thing to do is to once you've finished bleeding the brakes is to tie the brake leaver back with a cable tie or a bungie and leave overnight. This has the effect of forcing any air left in the system back up into the res. In the mornng just looseren the res cap to let out any xs pressure, retightern and there should be no more air left in the system. This should give you max pressure. Hope its some help