Generate a full detail guide for B2B SaaS founders on structuring customer contracts and Service Level Agreements (SLAs). The guide must simplify legal and technical terms. It should include detailed sections on: 1. Key clauses to include in a SaaS Master Service Agreement (MSA). 2. A detailed breakdown of what to include in an SLA (e.g., uptime guarantees, support response times, penalties for failure). 3. A guide to tiered SLAs for different customer levels. 4. Best practices for managing and reporting on SLA compliance. Please include a very strong disclaimer to have all legal documents drafted and reviewed by a qualified attorney.