... I don't see how a head can be that complicated, and I may take your vote of confidence as a reason to try 
Hi Lewis...
After visiting my local head shop here and having John check out my bad head, then having him give me a short introduction into how he builds a head and why, there is NO way I would ever tackle rebuilding a head!! The amount of precision, expertise, serious machinery, and measuring instruments is WAY beyond my level or interest.
But I certain commend any DIYer to give it a try.
Just my thoughts...
Gnarls.
