Hi Logan,
It took a little while for me to work out your problem and it sounds like a case of bad luck fitting the Flattener 4 to your D40. I have attached a pic of my set up using an EOS 400D and EOS T2-Adaptor. As you can see, there isn't much room left under the flash housing and yours is obviously lower. It sounds like a spacer of some sort is needed.
Cheers,
Steve
|