Timing Belt Problems

[term117]

Ok guys I am having a strange problem getting my timing belt on correctly. I used nfpgasmask great guide found here to replace my timing belt and water pump. I replaced everything, put it back together, pulled the pin, and every 3 rotations I lose a tooth on the belt. All 3 of the white lines always match up every rotation but every 3 rotations the notch in the crankshaft timing pulley is one tooth higher then the doted white line. I have redone every step a dozen times and the same thing happens every time. Can someone please help me out with this?

For those interested...
I am using a gates water pump replacement kit I got from eBay FYI = 155$ Shipped
Everything looked identical to the parts pictured in the guide I referenced above.

I was quoted 850$ for parts and labor from my local Isuzu repair shop 350$ for labor(Timing belt and Water pump) If I brought my own kit.

Thank you!