Remove the prop shaft by attaching an old prop or hand made tool (using prop bolts) to hold the hub while loosening the prop shaft. Then use a gear puller to pull the hub off. Or use a prop drilling jig to pull it off. After that installing the new one is the easy part. One thing is for sure, the hub does not just slide off after the prop shaft is removed.
You have two threads and have already resolved the issue on the other one. Nice. Now I know why I never go on RCU anymore.
http://www.rcuniverse.com/forum/m_11...m.htm#11257671