.....and will find it's own equilibrium. If you got two figting each other it's a different kettle of fish. There's far better verse than I can write on the Boston Whaler chatrooms - just search "twin engine" on there.
An inch or so offset won't make a huge difference - the planing pad (if you got one) is likely that wide! it's when you move a couple of feet to the side where the main body of the "V" is in full effect it will get significant.
Remember also you steer to go straight. The engine may not necessarily be exactly aligned with the forward motion of the boat
I still reckon the props need looked at tho'.