7 blade 17” fixed fan vs 6 blade 18” clutch fan

I have retensioned and replaced the belt and made it banjo tight a few times and the result is the squeal comes back, and the fan pulley has least amount of belt contact, and I can turn it with ease without the engine turning… again… which is aggravating. All I have is crank pulley, fan/water pump pulley, and alternator, V belt but no issues with keeping cool temps except that squeal if I need to blip the throttle to clear it out. I replaced alternator brackets to fix alternator twist to get the belt straight, and new belt at least a couple times, retention belt monthly…