A855 - 5 Speed

when you look in a modern trans some of the teeth in the sliders and some of the keys are tapered to pull a "not quite in" gear into gear and keep it there as load is applied
i do not know if this is a universal thing for all transmissions

and there are a few ways to do it

60s origin of a833 probably dicates that this was not done back then. i belive this kind of thing is an 80s borg warner idea
potentially missing, or not enough on 4th ? in the A-855 or on some A-855?

here is the tech speak for what i'm trying to say lifted off the internet as i don't really speak manual transmission, but have a t5 in bits at the mo and i know what i see.

"Once the sliding sleeve has completely moved into the locking toothing of the gear. Back tapers at the teeth of the sliding sleeve and the gear locking toothing avoid decoupling under load".

so i guess its saying load forces the gear set to stay in gear, due to tiny tapers to the teeth/splines and the force can only be overcome by yanking on the stick or using the clutch

would it be wrong to suggest a taper is missing somewhere in the A-855 design.

if this was the problem it might be why there was talk of a heavier spring....! a band-aid fix...!

i'm out of my depth

Dave