Re: gearbox question
It is well worth doing, it won't make your box perfect but I found it made mine much happier, though its still a bit graunchie when cold.
Probably the hardest part of the job is getting that bloody undertray off and on again. Have a look at the Alfa Workshop site in the How to section under "How to remedy a non selecting fourth gear" not what you are doing but some pictures to help with the geography.
The tricky bit is removing the drain plug which is a big hex. Unfortunatly its right by the wishbone mount so hard to get straight on it and it needs some welly to undo. I had to jack up the box a tad to make some room.
GTV and Racing Driver