my 72 crestliner was in neutral and engaged in forward with out pressing the forward button , it remains in locked in the forward postion ( I assume ) regardless of what button is pressed and of course will not start , myself and several boat owners have determined the shift switch is the problem , the switch is a 3 button for neutral , forward , reverse . I have had no luck locating the discontinued part with local boat dealers , are their other sources ? if the part cannot be located can a replacement shift be installed ?