Do I get BMW to strip my box or not? Clutch slur

[Matt21]

Need some urgent advice. I know its in search but wanted your thoughts on this specific case.

My CSL has bad clutch slur earlier this year. Some thrashing and a reset via the paddles has made this better, but not perfect.

In for some warranty work. BMW claimed they can spot the slur, and that I will need a strip down of box. Their master technician believes that it is "clutch & flywheel wear which is not covered under warranty". Strip down is £210 - 1.5 hrs labour.

I am convinced looking at previous posts it is not wear and tear. Few questions:

1. It has got better the more I use it but still does it. Thoughts?
2. £210 for a strip down seems cheap. What do you think?
3. Is they strip and put back together should there be any impact by doing this?

Tempted to leave it and see if it gets better or worse. Said I would respond by the morning.

By the way its Elms Bedford, so do trust what they say

Cheers

Matt