W.T.F ?

Could use new dist cap. But I know that can’t be this problem the cap alone. There is a popping noise coming from the cap while running. Part of the inside of distributor is rusted? I’ll post a pic if I can. The wires are not crossed anywhere. Not even close to anything . The old wires were melting and brittle at the plug boot. Super tight fit with my headers I have heat boots on the wires. But they were 4 ish years old. There’s definitely a popping coming Fromm inside distributor. I’m just wondering. What is warming up to a point we’re it causes the problem. If it was electrical interference? If think it would interfere from start up. Not 10 minutes later. But idk. Lol. I’m thinking if I popped Power valve. The next time I’d start it. It would run rich from start up. But that’s not the case ? Tinkered with it a tad today. Idled for 10 minutes. Did small week burnout Felt under powered. Drove it for another 3 minutes. Then it just started up again. Turned it off. Started. Drove it a mile. Same thing. Then lumped it home. Lol