Hi Peter!
I do believe I can hook you up!! What you want is the Hot Rock, made by EZ-Just, and has the 4" line spacing. The regular EZ-Just handle has 5" spacing I think. I have at least one grey 5" but I have never seen a Hot Rock that was gray. I think I have at least one original Hot Rock that was made of wood, but want to keep that one. There was a really good article in Flying Models I think it was, in one of their last issues on history of their production, largely made in a guys garage, basement and dining room!
How many do you want? Send me a PM with email and we'll handle this off list. I can send photos by email.
Type at you later,
Dan McEntee