I can work on chevy 350s and 750cc Kawasaki jet skis of my own. Now have a pontoon with a '94 merc 90hp tracker pro. It runs and runs good once it gets warmed up. Seems the electric choke is broke and also the linkage for the choke is broke. Is getting one of the seloc books (1990-2000) worth it? Do they tell you part numbers and such that I can determine what I need once I find the broken piece? Anything better for the $$ out there?