Hello I have a zenoah g26 engine and some days ago I was trying to unscrew a prop locknut from the cranckshaft and it was so tight I unscrewed the prop stud. How can I screw the prop stud again, it is very difficult to rotate it inside and get the proper screwing torque... should I use a locknut to help ? if I use the locknut how do I take out the locknut without unscrewing the stud?

Help!