In the middle of our MARAP application, 5 months in, just about 20 hours on the beast. Flies like a Jabiru 160 with a bit more power. Cowling mods finished , Got the water and oil temps up to a reasonable level, Blanking off the top cowl openings seem to have given us about 5 knots, But that may be wishful thinking I cant really see where that could have come from ( better engine temps maybe) . Someone asked me why I hadn't just changed to E24 Reg. I couldnt give an exact answer, so looked it up in the technical manual online. Now I am more confused than ever. The Jab 160c is a certified aircraft. Needs Marap for modifications. OK , Doesn't actually say that But OK. . However Page 6.1 section 8 through 9 goes on to explain the process to having it E-LSA registered. Does anyone actually KNOW , according to the Tech manual , Why, when I have no intention or requirement to teach in the aircraft, have to go through this complex process. It's difficult to understand and I fear that I have bitten off more than I can chew. I'm close to walking away from it and the RAA.. Just too difficult to deal with... Cheers, G