Zblock Explorer Numbers Don't Add Up

I’m using a Zcash4win wallet.

Looking at my accounts in Zblock explorer, the numbers don’t add up. It shows 19 total send transactions but I know I have 28 based on history at Poloniex and Bittrex.

I would expect Total Received - Total Sent = Transparent Balance but the Transparent Balance is more than double what is showing in my wallet. I believe I have accounted for everything so I don’t think anyone is stealing from my wallet but don’t understand the results.

Anyone able to shed some light on why these numbers wouldn’t agree?

Also try zcashnetwork.info explorer, Zchain isn’t always 100% accurate.