You have got your Dboys to shoot straight enough and far enough to warrant using a scope???? 
Well done, what is the secret? 
Does the Dboys have the scope mount fitted to the left of the sight? If it does, the tanaka should fit, if not there is nothing to attach it to.
aka Stigroadie
AFRA
better by design
"Truth is a shining goddess, always veiled, always distant, never wholly approachable, but worthy of all the devotion of which the human spirit is capable. "
Dboys won't fit the tanaka scope - the dboys has their version of the scope mount - but it's doesn't have the correct cutout goove on the underside of the mount. Or at least they didn't when I had 2 scopes, 1 tanaka and a dboys.
I dumped the dboys got a G-33 then off loaded both scopes - cause they are crap and passed on the G33 lol
