I have a /69 XR7 convertible that just got back on the road after many repairs. The car has a new gel cell battery, starter, starter solenoid, and after parking it for a week, the battery is dead. While using it the previous week I noticed a couple of times when starting it that there seemed to be a dead spot for a couple of seconds and then the starter would engage. I tried jump starting it and the starter stays engaged even with the key off and out of the ignition. I've been charging the battery overnight and it doesn't seem to be taking the charge. Other than replacing the starter solenoid is there anything else I should be looking for?