ASP, SC and Magnum are usually almost identical but not always. My son has the SC 1.08 which is an ABC and a quick google search shows the ASP is also ABC and not ringed. The first thing is that these engines don't like much nitro and are quite happy with zero nitro. The carbies are rather large so they need decent muffler pressure (we've fitted a carb from an Enya 60/80X which was a drop in fit).

Run it in with a prop that gives a fairly light load, like a 13x6 or 14x6, use a fuel with some castor in it (or all castor) and any medium to hot plug. Open the main needle about 2 1/2 to 3 turns because you want it running fairly rich at first. The ideal setting is where it's just breaking from a 4 stroke into a 2 stroke at full throttle but if it's in a 4 stroke then that's fine for the first tank. Let the revs slowly build up over the next 30-40 minutes and then it should be fine to fly but still keep it a bit on the rich side for a while. The slowish rich running allows the rod to run in while the faster and hotter running settles in the piston/liner fit.