Tashi would not peek if not kidnapped for it :P. Anyways can it be possible Tashi has already bought off his +1 LA for being trueblood human? So when 4th level hits in then it means he has +2 LA top of his 4th level (instead 4th lvl + 3 LA). I just think when skip is done in time he is 6th level char (with one bloodline level so 5th level class features) instead 5th level char.