Perhaps I have missed it when reading all posts, but: What are you guys using for cable system to the rear derailleur?
"Continuous outer all the way through" or "Short outer cables at chainstay and headtube + bare inner cable inside frame" ?
It looks like continuous outer will not fit at the bottom bracket. However, when using short outers I am afraid that bare inner shift cable may cut grooves inside the plastic cable guide at bottom bracket.
See pictures below.
3 cable holes at bottom bracket:
rear derailleur (inner) cable / front derailleur inner cable with metal tube / rear hydraulic brake line
cable guide and cover:
rear derailleur inner cable slot / front derailleur inner cable slot
When using full length housing I thought of leaving out the cable guide (not using a front derailleur) and use a spacer between cover plate and borrom bracket.
This also seems to require drilling out the hole at the bottom bracket (a little bit too small for outer shift cable) and replacing cable entry ports (which are included btw). Although the shift cable entry port at the chainstay seems rather stuck in place...
Perhaps the solution is to run shift cables like Jagwire kits with full length inner housing?