I have replaced the pedal bushings and the guide wheel at the transaxle. Clutch and accel cables are not twisted together.
At start up and until the car gets really warm, the pedal doesn't squeak and the cable moves smoothly. Once the car is hot, the pedal starts moaning and its feels like the cable is being dragged thru a bag of sand or gravel.
Seems like something has expanded with the heat but not sure.
Any ideas on what to check or lubricate???
Thanks for the advice.

I had some pedal squeak just like that, but was more constant. It was the clutch pedal rubbing against the footboard as you pushed it in and out. Its an easy check.

You are feeling resistance as the temp increases. I would suspect the cable housing under the engine. Start with a brand new cable (cheap). Keep you old one for an emergency. The cable sheath can be effected by excess heat. I run heat wrap on my sheath where it is close to the exhaust.