Focus noises/problems

I have a 1.8TDDI Focus-UK and its 2years old-so still under warranty. Two problems, which Fords seem unwilling to recognise and hence repair- any ideas.

After running for a few miles I can hear a "low pitched whisle", this can be heard more when the car comes to rest. It isnt constant but comes in 2/3 "waves" 10 seconds apart and then stops. Drive away and it starts again. I have had Fan belt replaced!
Gears have become very clanky especially between 2nd/3rd. They have looked at this and said they have adjusted "gear Linkage". Still their- Should I pursue ? This clanky resistance is not always present. Thanks - I want to book it in again armed with some technical backup!

-- Regards, Stu Devereux. Fax no. 08701339568 (Outside UK fax 448701339568) E-mail. snipped-for-privacy@btinternet.com

The focus has an inherent problem with the gear linkage spring. This is fitted at the bottom of the gearstick, has 2 legs on it, and holds the stick in a neutral position at rest......one of the legs breaks off the spring... I have replaced loads of them.... i will post the part no of it in the morning as i keep a couple of them in the workshop. The whistling noise may be coming from the radio speakers !!!!! saw a couple of them doing this and took me fuc***g ages to figure it out.... extract the radio and un-plug the speakers and try it....... even with the radio off it can generate a signal through the speakers.... requires radio replacement if this is the cause. I do a lot of work for the local ford guys and see a lot of those problems.....

F-O-R-D = "Fix or repair daily".......... & f**k do i know it.