I recently purchased a 1985 vt 750 under the understanding that the engine had been rebuilt due to valve noise. I was told that the wiring had issues which I was confident I could fix. I hooked a battery up and the engine would roll over if I shorted the solenoid. I found a blown ignition fuse and consequently a shorted wire. Replaced the wire and got spark and the engine rolls using the starter button. I put gas in the tank and rolled the engine. I got misfire thru the carbs and nothing else. I did a compression check and have 0 on both cylinders. I dont see any way to check the timing chains without removing the engine. what is my best course of action. Thanks in advance for any advice. Rick