I purchased a set of 4 rotors. They shipped and arrived. There were only 3 in the box. Funny thing is the invoice in the box shows I purchased 4 and said only 3 was shipped. Not really a big deal with RA by these were all coming from the same warehouse and I was never provided with a tracking number for the other rotors. I sent them an Email since they have no phone number to call. I’m just curious for those that have had issues how long was it before ya heard from them?