Have been using the blichmann conical for a short while and am learning some of its pro's & con's, and am wondering what others do with the racking arm? It came w/ the 1/2" std fittings e.g. Bottom ball valve, etc., but I am hesitant to take a sample using the racking arm before final racking with only a limited ability to sanitize. Has anyone had any issues w/ contamination after taking a sample and prior to final racking, or contamination at a later date that they felt could have been from earlier sampling? Just hoping to avoid a mistake. Any other advice greatly appreciated!