Had my rack replaced, along with the high pressure hose, but still getting the same grinding sound as before i had the repair. I have had 2 mechanics look and assess the same issue, and that i needed a new rack and hose. now that these have been replaced and i drove it for a day, i still have the same sounds. i was advised there was a lubricant that may help relieve this issue or any other ideas on correcting the rack noise?