T5 gearbox issue

[triple b]

I got a 95 vs v6 with the t5 in it, genuine manual. When the car sits in traffic for a bit it doesnt like to select 1st and sometimes 2nd gear unless the car is rolling a bit.

I put a new clutch cable in it the other weekend, it improved how the peddle feels but I still have the issue of selecting gears when its hot. The gearbox oil was changed 10,000km ago with dex3, I got no idea how long it was changed before that but I know I done 20,000km on it before changing the oil and it never missed a beat.

So basically why is it not wanting to go into gears when its hot? And what can I do to fix it?

[budwizer]

synchros...
or potentially selecting hub..
or selector fork pads...

and id say its to do with the expansion of metal inside the gearbox.

if those.. then sorry to say it rebuild or replace...