So anyways......
Had a Firgili actuator blow a drive nut a few weeks back..
Actuonix has taken over now and were very helpful in getting me back together by sending me some replacements at no cost except shipping. Thanks Ian!
However didnt need the "special tool" to get the end cap back on.
"The actuator shaft is screwed onto a Delrin/Fiberglass composite drive nut. This nut can be broken by over rotating the actuator shaft if you remove or reinstall the shaft tip. See
https://www.youtube.com/ watch?v=yQlQ9mKdwzU
Back together and ready for the dirt.