so far no problems, have not tried in atarimax cart, since i dont have any (i have a colecovision console though with original carts)
looks like all DRM is removed, i mean, must be, since it's working fine.
i'm at level 3 now (missile base)
the multiple attemps to load the cartridge is probably the other checks that your cart is doing and failing, since the check is not 100% accurate, so it fails sometimes on real colecovisions.
anyway, that's what i understand of it...