Hello John,
Is it the MMP scale plan book #11 under your kit parts?
If so, I've also checked the SH fuselage length with the drawing of this MMP books. (that I consider not too bad, in any case much closer to the station diagram than the kit 😉
don't you think the fuse part is also too short from the front?
when you place the ref with the cabin door (mid of the problem, ah, ah, ah), front is too short 1.5mm, and rear part 3mm too short.