Shroud gap too much?

Final follow up unless something blows up. I went through 2 FailPro thermostat gaskets using a small amount of Permatex Water pump sealant, following directions, and both leaked at low PSI test pressure. I finally sealed it by using ultra black in a thick bead, no gasket, and just snugging the bolts down overnight. Torqued this morning and held 15 psi forever, no bubbles on the soap water test. yay
I ran the engine in the driveway about 45 minutes playing around with my cheapo IR gun, temps never ran over 185. No spit to the recovery system. I am calling it a win. I wish I had a smaller wp pulley, but can't find a 5.25 at 2 inch height single groove. I will leave it alone. Currently pulleys measure the same size, matched set from CVF. It will eventually be an AC car but not this year lol.