this is one of the first problems ive had with this engine. the problem is is that sometimes the propeller will not turn over very easily its almost like theres a heck of a lot of compression in the crankshaft housing. sometimes i can get it to turn easily for a while with my starter but then it just gets stuck. need help!! please! i really need help because i am about to have my first lesson on wednesday. i am only 14. please help