Porter Cable 557 biscuit joiner

There are a number of 557 Mk III's with a defective part (believe it is the shaft the cutter runs on) that results in the slots being too wide (mine were approx 0.185), Porter Cable knows of this problem.
Peter
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and they deny ever having heard of it on the type 3s.
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IIRC that was a problem with the Type I's
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The guy I spoke to was Jack, when I called PC support they first tier support couldn't help but did arrange for a second tier/expert to call back; Jack was who called back. I bought my first unit from Amazon and had the problem, called PC and didn't really get anywhere, figured the easiest option was to get a replacement. Amazon service was great, replacement was sent overnight; however second unit had same problem of wide slot. I called PC again and got through to Jack who told me of a defective batch of shafts.
I've sent both mine back and borrowing a friend's DeWalt (the biscuits are a push fit) until the type IV's are in the stores. Then I'll probably go to a store where I can test the unit before buying.
Except for the slot being too wide I liked the unit, the exhaust needs to be redesigned, it clogs with cuttings after a few slots.
Good luck,
Peter

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