Trying to Source Extension Tubes?

I have a Nikon D70s SLR and use a Nikon 105mm DX macro lens for my macro work. I'm trying to find a set of extension tubes that will allow me to increase magnification.

The issue is that the tubes need to link seamlessly with the lens and the camera electronics so that I can retain control over aperture, exposure and, if possible, with the autofocus though that latter need isn't essential.

Despite a lot of hunting around I can't seem to find any manufacturer who is willing to certify their extension tubes as being able to provide this need.

Is anyone using extension tubes successfully with this combination of equipment? If so I'd really appreciate a recommendation as to who makes those extension tubes so I can get a set for myself. I'm not hung up on an exact match, if you are using a Nikon digital SLR and successfully using tubes with a Nikon DX lens and this combination gives you control over aperture and exposure and maybe autofocus, that's endorsement enough.

Thanks! I knew about the Nikon problems, so it has to be a third party maker like Tamron, Kenko, Promaster or others. The problem is none will certify that the combination works and I've not known anyone who's tried them to tell me if they do work or what problems I might have to expect.

Nikon PK11A, PK12 and PK13 provide aperture indexing, but do not support auto-focus. You will not get exposure metering on the D70 with AI lenses, which is the standard design of these extension tubes. I have not heard of a Nikon extension tube that will give you what you want.

Non-OEM extension tubes may provide what you are looking for, but I am not aware of any that do.

Ok maybe I dont understand some but r u refering to converters? If so their are digital converters and regular converters for all digital slr's. Try Ritz's camera centers. Take your camera in and try one see if that what ya need!!