It has been my observation that the PF aided turnover. The high fin Gyrator design did great in the wide tub of the Maytag conventional washers, but in the narrow tub of the automatic, I just don't think they turned over large loads as well. Having the higher side of the fin against the agitator column as in the PF agitator seems to work to pull items down against the agitator if the load is not too large. With the high fin Gyrator design, the outside edge of the fin is as high as the side next to the agitator column and, in the narrow tub of the automatic almost fought to keep items from being pulled down beside the agitator column. I know I did too much watching of Maytag's agitator action as a child and saw what no one is supposed to see, but that's my impression. Increasing the agitation by a few opm in the PF machines helped also, but if you put a high fin Bakelite agitator in a machine with the faster agitation speed, it really messes up the turnover and contributes to the load becoming unevenly distributed and unbalanced for the spin.
One thing I have been meaning to share is something I recently saw in an early 60s Consumer Reports article on washers after the capacity wars started. They tested each machine with an 8, 10 and 12 pound load. When I got to the paragraphs about each individual machine, (remember when they had writers instead of just people who could make dots in columns?) they said that the 16 gallon tub Maytag with the Bakelite lint filter agitator had no problem at all with a 12 pound load, then said a little further down that the Kenmore was over-crowded with the 12 pound load. After close to 50 years the reek of mendacity from those pages liked to make me pass out and drop the volume, something a librarian would almost never do. Hell, I've seen enough overloaded Maytags in John's shop to know that they were lying about that one. They had a bias for Maytags for a long time. I'm not saying that Maytags were not dependable and generally long lasting, but they were not great washers, nor were they easy on fabrics.
When John worked at the Maytag dealership, he always washed his workshirts in his LK combo while the owners' wives washed their workshirts in their TOL Maytags. They all remarked that John's shirts lasted longer. Part of the reason might have been the gentler washing action of the tumbler, but he did not have to bleach them as much to get them clean. Also, the Maytag added the bleach gradually as soon as it began agitating, but the combo had a timed bleach dispenser that added bleach to the last 4 minutes of the wash.