So you did change your set up some. You may have dropped more poundage than you think as well. Some scales are not that accurate, could have been off by a few pounds to beging with. That's also almost 200 grns in weight loss, that's pretty substantial.

What size arrows are you shooting and how long are they? And what is your draw length and model of bow you are shooting? 240 fps with a 500 grn arrow is fairly impressive to me. I would have suggested staying with that arrow, or maybe dropping to around the 400 grn mark. Not that what you have won't kill deer. The heavier arrow would just carry more energy farther because of the momentum is all, and it would be better on your bow in the long run. It's mostly a presonaly preference thing, they are both deadly if you put them in the right spot.

Paul