Time to dial in the calibration. Following the youtube tuning video by Winston Moy, I made the diy spindle tram he described. I was able to get the X plane almost perfect. In the Y plane, I still have at least 1/16" from front to back. If I grab the bottom of the Z carriage and pull gently toward me, there is a little wobble which is enough to explain the difference in Y from front to back. I don’t see an obvious fix, but I’m hoping I’m missing something simple. Thanks.
EDIT: Also, can I tram the wasteboard with a 1/4" end mill, or should I get a fly cutter? Hopefully thats the next step. Thx.