Maybe check with SJGames? SJG was the publisher for Space Gamer during that time, so they might have a copy in archives. Either try SJG's forums, or maybe PM Phil Reed -- I know he at least used to have an ENWorld account, though I've no idea if he checks it nowadays.
Probably on DW20, maybe on SG44, but it will take me a couple days to check.
SG Feb '81 is issue 36, not 44. Sorry, we have 36 but not 44.
I've got a copy of DW#20 for sure, though it's boxed-up in our attic. I'll see if I have any scans of the issue (Tadashi's been working on a DW archive on- and off for a few years now).
You might also consider posting to the Acaeum for input on the mags.