need zerk help!

so this is how much xp every quest you will get def from gives:

Nature Spirit (2k Defence xp)

Heroes quest (3k defence xp)

Fremmy Trials (2.8k defence xp)

Dragon Slayer (18.6k defence xp)

Defender of Varrock (10k Defence xp)

What Lies Below (2k Defence xp)

is 38,4k. I've done all quests except defender of varrock. Im currently 37 def and when i do defender of varrock i will be 40 def, Why is that? Is there any quest im missing cuz what im aware your suppose to get 45 defence?

 

18,650 Dragon slayer
10,000 Defender of varrock
5,000 Between a rock
3,075 Heros'
2,813 Freminik Trials
2,000 What lies below
2,000 Nature Spirit
= 43,538 exp (41 Defence)

Between a Rock for Hand Cannon, thats the only one i can think of. or if you wana stay under 40 def just keep it like what you've done now

 

http://sythe.org/showthread.php?t=1303313

exact guide i used

 

well do i really have to do the quest for hand cannon like is it important?