Hello all, longtime lurker but first time poster. My 87 60 series suddenly would not start on Friday. It ran fine that morning but as I was leaving school I heard just a single loud click. No cranking at all. However, I was able to push it out of the parking spot and got it pointed downhill so I could pop it into gear and it started and ran perfectly normally. I then parked on hills and repeated the process for the rest of the day with success. Since then I have verified it is not the battery, voltage is good and an attempted jump have earned the same single loud click. Additionally I replaced the starter and solenoid with a new unit from duralast with the same result. I did notice that a ground strap was disconnected but it seems as if it has been disconnected for some time. Any suggestions? A friend who has experience with a BJ60 suggested the starter relay however I believe that does not exist in a gasser? Really appreciate any help.