O,
Answer is both.
The tooling is reduced by a couple thousands from the original sets we machined for WE. I, as others, have had the same issues, mainly the largest two tools.
Have to measure the ID of part so the tool will not stick, but keep it large enough to stay in contact with the bulk of the bush sleeve OD. Makes for a compound critical dimension and a touch one at that.
The bushes are oversized per the part ID, which is the way it is engineered, otherwise it won't hold in the part. But you can't take too much off the OD of the tooling or there's not enough face to keep the bush centered for a straight press. By reducing these a little it has helped with the ID part sticking issue. But, the main one is that most of the parts are not flat. Just the nature of the mass production casting world and the bush cocks to one side when being pressed. This even happens on the machined sleeves I make for my panhard bars and control arms from time to time and its just the opposite; it's the bushing steel itself that is sometimes clipped at a slight angle and making it hard to keep straight. Once that sleeve is "wedge indented" its a pain to correct the misalignment moving forward as you know and then jams up the tool too.
Again the nature of a bonded/sleeved bush.
Jason