I have 2 cracks in my Yamaha 115 hp outboard motor cowling. Any one else have this problem? The engine is mounted to my Bennington, stored in a boat house with a custom lift and cover. I live in La. so the weather is mild and to my knowledge, the engine cowling has not been hit by anything. The engine is less than 1 yr old and has less than 15 hours of use. Any thoughts?