I had my 98 Bayliner out Sat. (3.0L with Alpha 1 outdrive)doing about 30 when suddenly it started making a loud screeching/scraping noise. I limped back (about a half mile)at less than 1o mph. I noticed the noise is much louder when I turn to the right. Is this common with the Alpha 1? My neighbor thinks it's the gimble bearing. I hate to take it to someone without some idea of what it might be. Ignorance can be expensive. Thanks for any help.