You have to try to hold the far end of the rod UP (i.e., level) while inserting and turning it. (If you just stick it in, it will droop and won't be square on the threads.) It can be quite a trick. You might try putting your socket back on it; if it's "tight enough" on the rod, it might give you more to hold onto while trying to keep the other end of the rod up. The trick is to keep it square to the threads.
1988 Coleman Sequoia - popup (1987-2007)
2012 Roo19 - hybid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10