Replaced the Ignition Relay (Dealer $25.00). With the Starter still removed and cables connected, turned the ignition key and the starter turned. Thought I had the problem fixed. Re-installed the starter and the truck turned over on the first few tries. Tried again the next day and it went back to being intermittent. I pulled the connector off the Ignition Relay and applied power directly to the small cable going from the Relay to the Starter Solenoid and the Starter turns. It has to be something between the Ignition Relay and the key Switch. Possibly the Clutch Safety Switch. I rigged two 5' cables that I extend from the Relay Connecter and the Battery through the window of the truck. For now, I start the truck by having the key turned on and shorting the two wires together. It gets me where I'm going, but still need to find the root of the problem. Autozone told me the Clutch Saftey Switch is a dealer part. Not sure of the cost, but I believe this is the last remaining switch/relay in line with the ignition key. I suppose I can try and short (bypass) the Clutch Safety Switch and run a test, if I can find where it is located.