I have an 04 merc 50 elpto. I just swapped it onto my boat from another boat. When i turn the prop by hand it makes a clunking sound and it shifts really hard into both gears. i havent tried to start it, this was just by hand. I sure hope I havent messed something up and hopefully someone can help??? Also, I have temporarily misplaced the plastic piece that holds together the throttle and shift cable. The thing that connects the to plastic pieces that are on the threaded part of each cable. Any help is appreciated!!! Thanks!!!