I agree with all have said. An uneven bevel seems to be the norm but shaves just fine if you can get past the OCD.
I have 2 TIs from the invisible edge, a basic and high end, both have wonky bevels but are fine shavers. Wether basic or high end they use c135 carbonsong. Send Steve Dempster from the invisible edge an email, he is more than happy to help in any way, he also sends them out shave ready.