While it might be tempting to use your own parts to repair a malfunctioning building hoist, it is generally not recommended. Building hoists are complex pieces of machinery that require specific components to function safely and efficiently. Using non-standard parts can lead to further damage, safety hazards, and may void any warranty on the hoist. It's crucial to use parts that meet the manufacturer's specifications to ensure the hoist operates correctly and safely. Always consult with a professional or the manufacturer for repair advice and parts.