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.
This is referred to as a good faith violation because while trade activity gives the appearance that sales proceeds will be used to cover purchases (where sufficient settled cash to cover these purchases is not already in the account), the fact is the position has been liquidated before it was ever paid for with settled funds, and a good faith effort to deposit additional cash into the account will not happen.