Two factors come into play: First, good quality applicators do a better job of applying paint, and more uniformly, than poor applicators. As a result, they achieve better hide, or coverage. Second, painting technique is a factor that could contribute to overspreading the product.
Liquidation and Free Riding. A liquidation violation occurs when the client sells a security to satisfy a cash obligation for the purchase of a different security after trade date. This is a violation because the sale of the second security will not be settled by the time the first purchase settles.
However, in practice, the short seller is required to post margin or collateral to cover losses, and inability to do so in a timely way would cause its broker or counterparty to liquidate the position. In the securities markets, the seller generally must borrow the securities to effect delivery in the short sale.