I am in the process of removing my heads, well i did a search and found that there are 17 head bolts, ive removed 16 and i can seem to find the last one. Is there one that is hard to see and is commonly looked over? or am i just blind

 

Here's a picture of the torquing sequence.

 

I found it, it was covered in sludge. Thanks for that diagram, i will need that when i put the new ones back on

 

No problem.