Sure, blame it on the board.
I know what you mean though; got the cheapest MS board I could find, and sometimes it just offers resistance to a press, when you don't press straight down on a key.
I have several boards lying around with those big ol' plugs, before PS/2, and some really old PS/2 boards too.
All of them are more comfortable to type on than this cheap MS pos.
They don't make 'm like they used to.