In Q&A 1609 (https://www.robotevents.com/VRC/2023-2024/QA/1609), it was ruled that it was illegal to disassemble and lubricate a motor cartridge, and that teams should instead buy a new cartridge from VEX.
Sometimes foreign debris gets stuck in the gear cartridge, or the grease gets goopy. From my understanding of the rules, it would be legal to disassemble a motor cartridge and remove any debris, and to clean off any goop. However, it would not be legal to add any lubricant back. Is this correct?