I know you are wrong on this, I suspect you just made it up. There is no way anyone at Round2 who knows anything would tell you 'We don't know how to make them." as you claim.
If that were the case, kindly explain how they managed to mold (quite well I may add) the recently released Piranha set with clear bodies (in clear and yellow tint).
I know the reason(s) why they opt to not reissue some kits with clear bodies. But your claim is downright misinformation.