After I bought your wheels I took them to the LBS to get some stan's rim strip fitted. They pointed out the bearings on both wheels feel gritty and the freehub is very pitted. Feel free to call 'Head for the Hills' in Dorking directly to check. Speak with Dan the owner.
I sent you an email on Friday informing you about the bearings but you have not yet responded. I have also called you but we got cut off after I announced myself and you are now on voicemail. I have sent another email offering to meet you half way between our houses so I can demonstrate the gritty bearings so you don't think I'm trying it on.
I spoke to the importer and they confirmed the bearings should be silky smooth, so they definitely need cleaning out or to have the bearings replaced (£68 + labour).
You seemed like a nice chap so I doubt you knew about the bearings but all the same I am concerned about paying anything above the £350 I already paid you.
Please contact me so we can discuss.