My Epi & my tape measure make it 32.5" from ball end to the center of the nut. But there's a zero fret. I've never stripped back the silk on those strings, & I really don't want a silked portion in the nut. Measuring an older set of long scale 88s, it looks like there is about 5/8" of silk before the windings step down. Also, from a page on Roto's website where I found their length specs, "When fitting Rotosound Bass Strings, be sure that the silked part of the string ONLY is wound around the machine post. If the speaking length of the string is wound around the post, the string may then be prone to breakage. This type of breakage is not covered by our normal warranty." No mention if stripping back silk impacts the warranty.
35.25" from the ball end to the center of the E & G tuners. I've medium Chromes on my Epi & haven't noted any issues with the full winding on the E being on the tuning machine's spool, but those ARE different strings with different structures.
Why not email
jason@rotosound.com & ask? Epi Voilas aren't a rare instrument.