Seem to recall I did caused that accidentally about 30 years ago. I took
the guide tube off to try and lubricate it but did not "sit" it back on to
the body squarely on reassembly.
(Another instance where the thought " if it aint broke...........
occurred to me.)
That reduced the "cross sectional area" of the tube so to speak where the
body and guide tube met so threaded section of cable wouldn,t go through.
Took it off again, made sure I lined up the guide tube so it sat squarely
on the body and all was well. If I recall correctly there is a "nipple" the
guide tube sits over.
Speedy is spot on, there are no sharp bends even remotely approaching 90
deg. I,d be looking at where front of the guide tube "attaches " to the
If you cant see it, and it is difficult , get some fencing wire, thread it
through the guide tube and then put the fencing wire into the body tubing
ie assemble it with the fencing wire in place which will keep guide tube
and body aligned and when reassembled withdraw fencing wire.
Hope that works