Why do you think resizing the big ends is going to fix side clearance issues?

Get the FSM, read how to measure the rod side clearance, measure it and compare to the specifications in the FSM. FWIW, having side movement is not uncommon. Having too much can be an issue but you need to measure it.

Your ticking is probably lifters,

They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.