Square Nozzel-My plane is a $35.00 Gremlin kit, but I cut my own fuse. I use a old Gremlin fuse for a pattern. but cut the front off. How do you like the TT Pro engine? I see they cost a lot less than my OS .46 AxII. It also looks like the os has a little more hp 1.63, your engine is 1.43. Happy flying to everyone