1) I weighed a couple YTPP and they all weighed just around 11.6 oz. They all had a synthetic grip on rather than the leather. The weight should be around the weight advertised if you remove the leather and switch out with synthetic.
2) you can ask TW to customize it to your liking with an extra fee. ( i believe $30. ) which does save the time to balance and weigh if you don't have any access to a scale and balance board. Or I'm pretty sure you can ask them to give you the lowest weight IG Prestige Pro and you can add weight from there with lead tape.
Racquet : TGK238.1 2X / Head YTPP 1X
Strings : BHB7 17G 49lb / LUX 4g Rough 17G