Throttle tube / cable problem?

Me again, problems always come in pairs or more...

Grips are sorted now thanks to replys in prev post

Last night whilst removing my throttle tube grip i rotated it as if i was closing the throttle to get the grip moving free... i found out this morning that as i close the throttle i was pushing it back so it was going past the normal place it would stop and then go back further, i have had the tube off, cleaned it, regreased it, new grip on, made sure every thing is present and correct, and there seems to be no evindence of any thing broken, also it doesnt seem t be as bad as it was, so now i guess the problem lies with the throttle return cable at the throttle bodies, i have had a quick look with a torch and i can see a cable which im guessing is the return cable stretching as i push the throttle past its stop point, could any body point me in the direction of what i should be looking at and for before i go at it hammer and tongs again?

Thanks

Having a look today any thing i should look out for?

Never realised £6.99 could become such a pain

Thanks

Just sounds like the cables need adjusting?
They may have worked loose over time.
Check a haynes to see what freeplay you should have

Think ive found the problem

In the metal casing which holds on the throttle tube and guides the cables so to speak there is a little bump, looking at my throttle tube where it meets the bump has grounded off and there is a smooth sort of slope there, so i guess my problem lies there. Time to get the q bond out and hope that works other wise its 21 quid for a new tube at my local stealer!