Hi, sister was at a free workshop today, where something should be repaired. Since she has little money, she ordered suitable spare parts in the www and brought them with her for the appointment. In the workshop she was told that one does not carry out the repair with the brought parts, since one could not give a guarantee for it. One would have to order the parts yourself. But the workshop also orders parts in the www. Where is the difference? And how is that with guarantee? If you pass end parts, where is the problem? Thank you. Greetings Bud