340 timing chain cover leak

Had a gasket leak after using a paper gasket so I bought both timing chain and water pump gaskets from Superformance Products. These are their MP-15 rubberized gaskets that are supposed to be reusable. Guess I can't use RTV or anything like it. Heard you just use silicone grease. Think I may have caused the leak after pulling and reinstalling 4 long bolts and 2 short (one at a time) at a later date. That's when I installed the motor and attached the A/C compressor, Alt. and power steering pump. What experience have you guys had with using Superformance gaskets?

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