1: clean the model in warm soapy water, let it fry, then glue it, it still has agent on it from the mould, once thats gone it will stick fine
2: only ways i know to get rid of the shine:
1a: paint over the shiny area and around the actual picture on the transfer.
1b: give the model a thin coat of matte varnish, it will kill off the shine.
Edit: killa kan legs are annoying, ive put together 9 so far, and the pins never fit right, i used green stuff on one of them to keep it in place.