I have a 1963 88", original engine and Solex carb. I recently had my carb rebuilt by someone I trust with a kit from Ike and it ran great for a month. It was like a new truck. Out of nowhere, once the engine warms up to its normal operating temp, at idle the oil pressure drops pretty dramatically. I've never had oil pressure issues in the past. At a cold start, the idle is great and oil pressure is strong and steady. Once warm it drops and I have to rev to keep it from dying off. I mention the carb rebuild not because I'm certain it was a factor but mainly because it was the last thing done to the truck which has never let me down. Before I start poking around I thought I would throw this out there to see if others my have some guidance. Thanks in advance and I'll also mention I am away from my phone and computers for long stretches so any questions my take a while to get answered.