Well, After drilling my muffler nipple and the remote nipples and the carb nippleon my new GMS .47, I did not see any difference in the way it ran or died I should say. BUT, I took the end cap out of the carb and looked thru the spray bar hole and saw some trash in the spraybar from where I had drilled it I guess. cleaned out the trash, reassembled, re-tuned and now it runs better than it has yet! I have a run little over a gallon of 15% tower hobbie fuel in it, and it runs better with every flight. I am still tweaking it as it wants to flood out if run at a lower speed too long, and it has to have the fuel blown out after a taxi and just before take off or it will die at 10 feet. But I am much happier now. I am just learning how to fly and a first timer doesn't need this, he needs stick time!