Sustain/CI4+ spool set screw?

[DEA]

Hey fellas, does anyone what size Allen head screw on the spool shaft is to remove the spool bushing?

Thanks!

Will

[Killums]

Just confirmed this a couple days ago on the Sustain FG, been trying to activate my account to reply since. 
It is 0.89mm, the second-smallest hex size known to man (OK, known to me).  This size is available in both drivers and hex keys, but you may have to special order like I did.  The spring steel wire is such small gauge, even my PB Swiss key came bent from the manufacturing process.  Can't help but feel this is somewhat of a shibboleth from Shimano to discourage amateur technicians from getting deeper into the reels.

[Rancanfish]

Alright, what's a shibboleth? lol.

[Three se7ens]

http://www.mcmaster.com/#standard-hex-l-keys/=u83w0c