tooling gelcoat

i cannot find a single supplier in the uk that sells specific polyester tooling gelcoat,they all try and sell me normal gelcoat with pigment in it,ive used this but the molds dont last as well as i would like,any suggestions?

iso tooling resin pigmented black and cabosil?

i use an epxoy tooling gel that works well, think the brand name was technirez or something like that i will check on the details for you surly if i can get it in australia you can get it in eurpoe somewhere.