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[kaustav]

Yes--- the indentations at most should be small that too at the beginning when you start knocking the bat in.

[steelcouch]

if is very thin hairline "cracks" then dont worry about it too much
i think the theory is to create a hard outside layer so sounds like you are doing a thorough job.
It has also been discussed how oil helps soften the top layer of wood and helps the fibres bond together.
IF the bat is lightly oiled and there are a few thin cracks i might think of giving it a touch of oil, leave it over night and continue knocking then if you think it needs a bit more.

If the cracks have any width then i would consider contacting manufacturer. You could put pictures up

 

[Cover_Drive]

What if it is already scuffed mate?

By scuffed I mean scuff sheet..

[SAFC2403]

What if it is already scuffed mate?

By scuffed I mean scuff sheet..

This is why i dont like scuff sheets being on a bat from new - you dont know at all how much oil has been applied - I've got a GN Longbow and for the first couple of seasons it was awful to use - got sick of and took the scuff sheet off - sanded it down and applied a teaspoon of oil and then did 6 hours of proper knocking in on it and it now feels properly knocked in.Mind it has taken about 7-8 years to get to this point!!

[PedalsMcgrew]

That is commitment to a bat! I like it!  You're a far more patient man than most on this forum!