black milliput

was wondering if anyone has had any issue with the darker milliput not hardening...ive always used the natural colour with no probs, but this latest pack is the black colour and for each of the times ive used it the hardener doesnt work anywhere near as well as the natural coloured one...or have i just got a bad pack?

have never used the black version, only original or the white superfine.
Only issues ive ever had was when i didnt mix it properly and it never hardened. But the black stuff could be different

cheers brian, yeah def an issue with the black...i may buy a new pack of original colour, it always hardened in a few hours, this stuff is still like putty after two days! i presume its the black colouring additive thats affecting it..ah well...live and lern, cheers m8