You can also soak the parts in Westley's Bleche Wite whitewall cleaner. I am sure there are more things to use, but, that works pretty darn good for removing any mold release. Please keep us posted on this build. I have a few of Mark's engines and I should be building a stalled project soon with one!!
I remember buying a kit, an F-14 Tomcat to be exact, at my local hobby shop when I was a kid and I noticed the price was a bit more than usual. i asked the owner why and he said Oil. This was during the gas crunch of 1979. He said that it should drop again, but, don't expect kit prices to drop. He said the model companies weren't going to sell them any cheaper to him. Thus, i learned about model economics right there and then! It would be nice, but it is not going to happen