Guys- this PE insulators, are thing of the past. Ive tried them, and it is not worth chasing. Better insulators can be made using the sculpting putty, like Magic sculp.
I thought it woul be good idea with PE set, as lot of us struggle with the kit parts, but i realised it is hard to get good results using PE insulators, and quiet frankly you will not be satisfied with the final effect.