Thanks much for the responses!

Msm2000uk, thanks in particular to pointing me to that other thread suggesting that working with QR CS is a bit like a visit to the souk.

In terms of moving past their current offer of $75 for compensation for F to J downgrade, would you suggest I write to [email protected] and advising that the amount they offer is not acceptable? I'm just trying to understand the rhyme and reason of getting them past their initial ridiculous response.