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hello, i have a sirio .23 and was putting new stater on it. while turning the flywheel it felt like it was gettin compression twice. thats the only way i know to explain it.i checked all my other engines and none of them do it. so i took it apart knowing something is wrong. the rod to crank bearing is tight but for the 1/4 turn while the piston is on top the piston stops. the first tight feeling is when the piston stops up top and the second tight feeling is when the piston starts coming back down. so i thought wrist pin or something. took it all the way apart the rod seems tight on the wrist pin but maybe the wrist pin is a little sloppy in the piston. i don't know which part is wrong. it moved alot more in the sleeve(cause the compression), and its hard to tell with it apart. i hope this makes sense to someone. i think this happened because of a flooding, rotostart, drill situation. any help would be appreciated, i would liketo fix because i just went over my first gallon and trully love the engine.