a multitude of things:

1.) late shipment which meant i missed my planned week off for restoration.
2.) shipped actuator with metric fixing nuts --> i was told they was sure they were right, when i explained these will strip the thread, the guy would not send some out and advised me to go buy some ( i already did, from you!!)
3.) i ordered a -31 actuator, they sent a -18. since i missed my week off, i did not resotre the car till 2 months later, as such he would not accept a return as too much tim had passed..... NICE!! now i have a useless -18. pukka
4.) sent windscreen jets that dont work.
5.) i ordered a S1 rst fan switch, they sent a s2 one. They did re-supply a s1 fan switch but it did not work!!. again as a couple months had passed, no exchange or refund.

absolutely terrible behaviour in my opnion,. most other rs part suppliers help no end to help you get a beloved RS back on the tarmac. not these guys unfortunately