(Yesterday, 16:13)Jeff Jones Wrote: the size is because its a .io file not a ldr/mpd dont know if they are allowed here
They are, though they would be comparable in size to LDraw files. I notice there's an .ldr file of 27 MB embedded within this .io, plus a lot of custom parts.
That's all fine, there's no prohibition that I'm aware of. It just may be worth checking into the cause of the excess file size, since in most cases it should be possible to fit an official model as an attachment within the current limits.