I only know how to contact him the same way you do: throiugh a PM
and guys, he has an actual job and life that he needs to attend to. he only makes stuff as quickly as he can, which isn't very fast. he's not at everyone's beck and call, and will start up his shop every time someone gets an idea for a new prop. With the gunblade, it was a case of him being intrigued by the idea, me being willing to pay for it, it being simple and doable, and us having confidence he could sell another dozen of em on ebay (which he did). Doc Ock Tentacles are difficult, especially if you wanted them affixed to a harness for someone to wear, as you suggested. The ones he made originally (to start this thread) where supposed to be for display only, and he wanted a few hundred just for 2 feet of one of em. it's not cheap, nor easy for him to make.
and for all we know, he hasn't been around cause he's having a family crisis or something. Maybe he'll never come back, in which case I'd be sad, cause he was a nice, cool guy