I ordered an Irvine .53 for my US 40.. Should I just run a couple tanks of fuel through it and try and go? What fuel? Will it use the plain Omega 10% that I use on my trainer? Will an 11x5 APC prop be an ok start? Will it come with a glo plug? Got it from http://www.hobbybarn.com for $137.50 including shipping. Here's a good one, I hear all this talk about high needle and low needle and lean and rich and all this mumbo jumbo magic stuff. What does it mean? Any good links out there about engine tuning? I can't wait for a good FAQ to get posted on here for dummies like me. A guy at the field adjusted my EVO .46 trainer engine and I haven't had to touch it. - Joe