Get those bloody bushes out.

Frankly, I'd ignore anything about poly squeaking until you hear it. After the lung-charring and press fixturing experience of trying to get old rubber bushings OUT versus the slide em' in and they just work experience of putting the poly ones IN? I'd rather let it sit and if it starts to squeak I'll slide the poly out and re-lube it. And if it becomes a regular thing install a zirk near the poly centerline and just put it on my bi-yearly lube schedule. Those rubber bastards were a pain to get out and required a lot of neighbor-annoying black smoke to get burned clean.