RE: Flexible pushrods?
The most serious problem you will find from bending is if you fail to support the outer tube at several places in the fuselage. There shouyld be a balsa suppor at least every 3" to 4".
Minnflyer gave you the best solution. Thread one end in about 3/8" and then try to pull it out.
I'll take bets on whether you or the rod wins the tug of war.