FITZWA

When selecting 1st or reverse, the gearbox is making a loud grinding sound, at first it was just a every once and awhile problem, but its getting progressively worse. It shifts cleanly between gears, it just seems to be as im letting the clutch out it makes this noise, and sometimes as im putting it into gear say from a stand still. if i let the clutch out and put it in N it stops straight away. any ideas ?????

I have a 89 GTR, the car is giving off a strong fuel smell when ideling and snaking through traffic. The car is fitted with a Power FC, and a few other mods. The car was only tuned in November last year. Now i know it could be a number of things, but does anyone have any other ideas to add to the mix ??? Any help would be greatly appreciated as no one can give me a straight answer, ive had the it checked by so many people, and one explanation contradicts another. Very Frustrating. Cheers.