I posted this on the GTV forum but would like to broaden the audience. Has anyone with a new 6-blade engine fan noticed that the hub mounting surface is offset differently than the original Alfa fan? Original Alfa 2.0L fan (from '74) had the mounting plane roughly halfway through the fan, while the new repro units have it much deeper into the fan. This is causing interference issues with my 2.0L motor's A/C pulley--even with the original spacer installed. Basically, the new fan sits 10mm aft of where the old fan sat. Apparently not an issue with non-A/C cars. Were there different size factory spacers? Parts book lists only one fan type for A/C, non-A/C US cars. Thanks much!