Just reading your posts in this thread, it is easy to see you are a LOT more knowledgeable and mechanically inclined that I am. Like about 1000 times more lol. But, I have been calling my bus(s) home for about 15 years now and loving every minute of it (ok so not EVERY minute, but most every minute lol). Started out with an MC9 and after about 7 years moved up to a MCI 102A3 in order to get the extra room with the width and a stronger engine, moving from an 8v71 to a 6v92.
The bad news is that parts and repairs can be darned expensive, especially for a guy like me that can not do a lot of it himself (both due to knowledge/experience, and also to spinal cord damage). The good news is that, if you have a well maintained unit to start with, repairs are very few and far between.