dunkley's famous macaroni salad

Ingredients

• 1 package ditali pasta/elbow macaroni (16-oz)
• 1 cup celery, diced
• 1 cup red onion, diced
• 1 cup yellow or white onion, diced
• 1 cup medium cheddar, diced
• 1 cup swiss cheese, diced
• 1/2 cup parmesan, grated
• 1 cup dill pickles, diced
• 1 cup salami, diced
• 1 can (6-oz) large pitted black olived, drained (or 1 cup diced or sliced)
• 1-2 tablespoon garlic salt
• 1-2 tablespoon fresh minced garlic
• 1/4 teaspoon dried horseradish
• 1/2 teaspoon ground white pepper
• 1-2 teaspoon freshly ground black pepper
• 1/2 teaspoon cayenne pepper
• 1/2 teaspoon dry mustard
• 1/2 teaspoon celery salt
• 1 jar (3-oz) diced pimentos, rinsed and drained
• 1-1 1/2 cups mayonnaise