Hi, I'm new here so please be patient with me. I am looking a buying a 1997 seadoo challenger 1800 that is in very good shape and performed well on the test drive. My question is how reliable are the twin rotax engines? I have owned a regular boat but this is my first jet boat to own. I know seadoo went to a Merc V6 in about 2000 and now thay have the new rotax engine. I just don't want to buy something that has engine problems all the time. thanks again