they sent me wrong pushrods with the oil hole

You can always see what happens by mocking it all up, turning the oil pump, and turnign the engine over by hand at the nsame time. It may not be an issue - if the holes are not uncovered by the rocker I'd think that would seal it. But I'd want to "see it wet" before I said it was fine.
Honestly - I use Comp for a lot of products - but for pushrods they haven't been my first choice for years. One call to Smith Bros and they are at my door in 3-4 days from 1/2 way accross the country. Fantastic guys to deal with & top quality product for slightly more $$.