Hello everyonee

Right I have had my bocks almost 3 weeks now

and theyve had some had use
On them 12 and a hlaf hours straight yesterday

It was amazing

.. anyway!
Both treads have holes in them?

they arent down to the metal yet though... ( look at pic

)
And is it normal for them to wear down more on the inside?
Or is this my fault in the way I use them?

Thanks!
Hannahx x