Crankset woes

Anyone able to help? I have a Shimano SLX crankset with a spindle that's too short.
My frame has a 73mm BB, I have an XT m8000 BB with 1 spacer on drive side only.
The frame has a 148mm rear axle and I have some Shimano M7100 1x12 cranks that are for a 52mm chainline which is boost right?
When installed (definitely pushed all the way through) I'm left with a non drive side that sits half way on the spindle.


My frame has a 73mm BB, I have an XT m8000 BB with 1 spacer on drive side only.
The frame has a 148mm rear axle and I have some Shimano M7100 1x12 cranks that are for a 52mm chainline which is boost right?
When installed (definitely pushed all the way through) I'm left with a non drive side that sits half way on the spindle.


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Posts
You've fitted the bb correctly with the correct spacers so doesn't seem like the issue is there.
You may find the spindle will go through a bit further if you give it a good tap with a rubber mallet if you haven't already.
Worth double checking the direct mount lockring is fully tight, fitted straight and sitting flush too.