You sound paranoid mate, like you've convinced yerself already, it's one of the best rods money can buy. I really doubt it's capable of softening up with use so soon, they've not been out for all that long (assuming it has been used as a casting blank). If it had been used a plenty, even the best cared for rods would have scratches on them. Zziplex do seem to have a reputation for each rod in model range having its own feel, rather than century that apparently all have an identical feel.
I've had the same 'weird' experience chucking with new rods, the C3ld was a prime example. I just couldn't get on with it the first few times I took it down the beach, it felt really hard work whilst everyone was saying it's a pussycat etc.
I eventually took it fishing and it suddenly felt like one of smoothest rods I'd ever cast with, even 200g + bait felt easy. From that point on it felt great, I just had to slow down my cast, that same failing still causes me trouble generally.
If I were you I'd give it plenty more time, if you don't like it, sell it on. They always fetch good money on the 2nd hand market. I doubt you've bought a lemon, so don't write it off just yet, get out and enjoy it. :kissing: